COVID-SCORE: a global survey to assess public perceptions of government responses to COVID-19 (COVID-SCORE-10)
Open accessAbstract
BACKGROUND: Understanding public perceptions of government responses to COVID-19 may foster improved public cooperation. Trust in government and population risk of exposure may influence public perception of the response. Other population-level characteristics, such as country socio-economic development, COVID-19 morbidity and mortality, and degree of democratic government, may influence perception. METHODS AND FINDINGS: We developed a novel ten-item instrument that asks respondents to rate key aspects of their government's response to the pandemic (COVID-SCORE). We examined whether the results varied by gender, age group, education level, and monthly income. We also examined the internal and external validity of the index using appropriate predefined variables. To test for dimensionality of the results, we used a principal component analysis (PCA) for the ten survey items. We found that Cronbach's alpha was 0.92 and that the first component of the PCA explained 60% of variance with the remaining factors having eigenvalues below 1, strongly indicating that the tool is both reliable and unidimensional. Based on responses from 13,426 people randomly selected from the general population in 19 countries, the mean national scores ranged from 35.76 (Ecuador) to 80.48 (China) out of a maximum of 100 points. Heterogeneity in responses was observed across age, gender, education and income with the greatest amount of heterogeneity observed between countries. National scores correlated with respondents' reported levels of trust in government and with country-level COVID-19 mortality rates. CONCLUSIONS: The COVID-SCORE survey instrument demonstrated satisfactory validity. It may help governments more effectively engage constituents in current and future efforts to control COVID-19. Additional country-specific assessment should be undertaken to measure trends over time and the public perceptions of key aspects of government responses in other countries.
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Written from the paper’s full text.
TL;DR
The paper develops and validates COVID-SCORE-10, a ten-item survey measuring public perceptions of government COVID-19 responses, using 13,426 respondents across 19 countries in June 2020. It reports satisfactory reliability and unidimensionality, with country scores ranging from 35.76 (Ecuador) to 80.48 (China) and associations with trust in government and COVID-19 case/mortality indicators.
Key findings
- COVID-SCORE-10 showed internal reliability: Cronbach’s alpha was 0.92, and the first PCA component explained 60% of variance with remaining eigenvalues below 1, indicating the tool is reliable and unidimensional.
- Among 13,426 respondents in 19 countries, mean national scores ranged from 35.76 (SD = 23.05) in Ecuador to 80.48 (SD = 16.31) in China; other high scores included South Korea 74.54 and South Africa 64.62, while low scores included Brazil 36.35 and Poland 41.28.
- Scores did not vary significantly by gender, age group, education, or income level; the greatest heterogeneity was observed between countries. The highest-scoring item was item 10 on international/WHO cooperation (average 3.53), and the lowest was item 9 on mental health services (average 2.79).
- Country scores correlated with trust in government to address unexpected health threats (r = 0.64, β = 45.8 [20.0, 71.7]) and Wellcome general trust in national government (r = 0.58, β = 37.6 [10.1, 65.1]); they were negatively associated with COVID-19 cases per million (r = -0.37) and self/family COVID-19 illness (r = -0.34), with no observed correlation with HDI (r = 0.07), EIU Democracy Index (r = 0.04), or World Bank income level.
Methods
- Cross-sectional online survey conducted 16–20 June 2020 with 13,426 adults aged 18+ from 19 countries, ranging from 619 to 773 participants per country; random stratified sampling by age, gender, and education (plus US race/ethnicity), weighted to population estimates, using multiple international online panel providers.
- The COVID-SCORE-10 instrument asked respondents to rate ten government responsibilities on a 1–5 scale; responses were summed, min-max transformed, and multiplied by 100 to produce country-level scores from 0 to 100, with item order randomized and surveys translated into national languages.
- Analysis included descriptive country/item distributions, demographic comparisons, internal validity via Cronbach’s alpha and PCA, and external validity via univariate regressions and Pearson correlations with country-level variables including World Bank income level, EIU Democracy Index, HDI, Wellcome trust, COVID-19 cases/deaths, and self/family illness.
Limitations
- Stated in the paper: cross-sectional data do not permit causal claims; interpretation of “government responses” is complicated by varying governance structures, including subnational governments; and despite precautions, inadequate representation of some marginalized segments may have introduced response bias affecting country scores or associations.
- Evident from the text: associations are measured at the country level, so they cannot support individual-level inference; online panel recruitment may not fully represent the general population; and China was excluded from analyses using the Wellcome Global Monitor trust variable because responses were not available.
Model-written summary. Check it against the paper before relying on it.
Integrity signals
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Cites
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Claims the paper makes
0 of 4 cited sources checked · 0 supported · 0 flagged
- Findingown data
The proportion of 'yes' responses to the survey item assessing trust in government to successfully address unexpected health threats, including COVID-19, had a strong positive correlation with mean country COVID-SCORE (r = 0.64, β = 45.8 [20.0, 71.7]).
“the proportion of “yes” responses to the survey item assessing “trust in the government to successfully address unexpected health threats, including COVID-19” had a strong correlation with the mean country score (r = 0.64, β = 45.8 [20.0, 71.7])”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Rests on an assumption: The survey item assessing trust in the government to successfully address unexpected health threats, including COVID-19, is a valid measure of trust.
- Findingown data
No relationship was found between World Bank income level and mean country COVID-SCORE.
“No relationship was found between World Bank income level and the mean country score”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
Country COVID-SCORE had no observed correlation with the country HDI score (r = 0.07, β = 7.3 [-43.5, 58.1]).
“The country score did not have any observed correlations with the country HDI score (r = 0.07, β = 7.3 [-43.5, 58.1])”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
The US had the most variability in COVID-SCORE responses.
“The country with the most variability in its responses was the US as there is a uniform distribution of people rating the government response well and a similar distribution scoring it poorly”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
Country COVID-SCORE had no observed correlation with the EIU Democracy Index score (r = 0.04, β = 0.26 [-2.7, 3.2]).
“or with the EIU Democracy Index score (r = 0.04, β = 0.26 [-2.7, 3.2])”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
There was a weak negative correlation between country COVID-SCORE and COVID-19 mortality per million (r = -0.16, β = -0.01 (-0.003, 0.02)).
“A weak and negative correlation was found for the mortality from COVID-19 per million (r = -0.16, β = -0.01 (-0.003, 0.02)”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
In the United States, respondents earning above the monthly median income scored the government higher than those earning below.
“in the United States those earning above the monthly median income scored the government higher than those earning below”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
There was a moderate negative association between country COVID-SCORE and the proportion of participants reporting that they and/or their family members had been sick with COVID-19 (r = -0.34, β = -51.2 [-120.3, 17.9]).
“there were moderate and negative associations between the country score and the proportion of participants who reported that “they and/or their family members had been sick with COVID-19” (r = -0.34, β = -51.2 [-120.3, 17.9])”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
There was a moderate negative association between country COVID-SCORE and COVID-19 cases per million (r = -0.37, β = -0.0019 [-0.004, 0.0005]).
“as well as for COVID-19 cases per million (r = -0.37, β = -0.0019 [-0.004, 0.0005])”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
The three lowest-scoring countries were Ecuador (35.76), Brazil (36.35), and Poland (41.28).
“The three lowest-scoring countries were Ecuador with a score of 35.76 (SD = 0.68), Brazil with 36.35 (SD = 024.59) and Poland with 41.28 (SD = 25.30)”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
The COVID-SCORE-10 instrument has high internal consistency, with Cronbach's alpha of 0.92.
“We found that Cronbach’s alpha was 0.92”
- Also stated in: § Validation of the score · plain
“Examining the internal validity of the score, we found that Cronbach’s alpha was 0.92”
Quote in the paperSubstantial claim - Also stated in: § Validation of the score · plain
- Findingown data
Across all countries, the lowest-scoring COVID-SCORE item was item 9 (mental health service availability) with an average score of 2.79 (1.31).
“The lowest-scoring item was item 9 (addressing mental health service availability during the pandemic) with an average score across all countries of 2.79 (1.31)”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
Greater heterogeneity among responses was observed in seven countries: Brazil, Ecuador, Mexico, Poland, Sweden, the UK, and the US.
“Greater heterogeneity among responses was observed in seven countries with wider boxplots (Brazil, Ecuador, Mexico, Poland, Sweden, the UK, and the US)”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
Across all countries, the highest-scoring COVID-SCORE item was item 10 (multilateral/WHO cooperation) with an average score of 3.53 (1.24) on a 1-5 scale.
“the highest-scoring item across all countries was item 10 (Perceived multilateral (WHO) and international cooperation) with an average score of 3.53 (1.24) on the scale of 1 to 5”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
There was a moderately strong positive correlation between country COVID-SCORE and general trust in the national government as measured by the Wellcome Global Monitor (r = 0.58, β = 37.6 [10.1, 65.1]).
“A moderately strong positive correlation was found for the measure of general trust in the national government (Wellcome) (r = 0.58, β = 37.6 [10.1, 65.1])”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Findingown data
Mean national COVID-SCORE ranged from 35.76 (Ecuador) to 80.48 (China) out of a maximum of 100 points.
“the mean national scores ranged from 35.76 (Ecuador) to 80.48 (China) out of a maximum of 100 points”
- Also stated in: § Average COVID-SCORE by country and item · plain
“average country-level scores (SD) ranged from 35.76 (SD = 23.05) points to 80.48 (SD = 16.31) points out of 100”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Also stated in: § Average COVID-SCORE by country and item · plain
- Findingown data
The proportion of respondents who reported that they or a family member had become sick with COVID-19 was associated with the COVID-SCORE in the expected direction.
“Mortality per million from COVID-19, the proportion of respondents who reported that they or a family member had become sick with COVID-19, trust in the national government, as measured by the Wellcome Global Monitor, and trust in the government to successfully address unexpected health threats, as measured in this study, were associated with the COVID-SCORE in expected directions.”
Quote in the paperNot a substantial claim- Rests on an assumption: The proportion of respondents who reported that they or a family member had become sick with COVID-19 is a valid measure of COVID-19 burden.
- Findingown data
Item 2, which directly measures government communication responsibilities, scored as the second highest-rated item across all countries.
“Of the 10 items in our study, item 2, which directly measures government communication responsibilities, scored as the second highest-rated item across all countries.”
Quote in the paperNot a substantial claim - Findingown data
Item 6 (continued access to necessary services) was scored above 4.00 only in China and Singapore.
“Globally, item 6 (assessing continued access to necessary services) was scored (3.16) closest to the mean of all items (3.11) and was scored above 4.00 only in China and Singapore.”
Quote in the paperNot a substantial claim - Findingown data
Items 7 and 1 were scored substantially below the means for all other items.
“In our study, the global mean for item 7 (assessing socioeconomic and health protections for vulnerable groups) (2.99), and item 1 (assessing assistance meeting daily needs in terms of income, food, and shelter) (2.90) were scored substantially below the means for all other items.”
Quote in the paperSubstantial claim - Findingown data
Item 8 (provision of personal protective equipment to healthcare workers) scored 3.00.
“Other responsibilities related to health systems functions such as item 5 (assessing access to free, reliable COVID-19 testing) (2.91) and item 8 (assessing the provision of personal protective equipment to healthcare workers) (3.00) received among the lowest scores.”
Quote in the paperNot a substantial claim - Findingown data
Trust in the government to successfully address unexpected health threats, as measured in this study, was associated with the COVID-SCORE in the expected direction.
“Mortality per million from COVID-19, the proportion of respondents who reported that they or a family member had become sick with COVID-19, trust in the national government, as measured by the Wellcome Global Monitor, and trust in the government to successfully address unexpected health threats, as measured in this study, were associated with the COVID-SCORE in expected directions.”
- Also stated in: § Discussion · boosted
“General trust in the national government and trust in the government to successfully address unexpected health threats were clearly associated with country scores for COVID-SCORE-10.”
Quote in the paperNot a substantial claim - Also stated in: § Discussion · boosted
- Findingown data
Mortality per million from COVID-19 was associated with the COVID-SCORE in the expected direction.
“Mortality per million from COVID-19, the proportion of respondents who reported that they or a family member had become sick with COVID-19, trust in the national government, as measured by the Wellcome Global Monitor, and trust in the government to successfully address unexpected health threats, as measured in this study, were associated with the COVID-SCORE in expected directions.”
Quote in the paperNot a substantial claim- Rests on an assumption: COVID-19 mortality per million is a valid and comparable indicator of a country's pandemic burden across countries.
- Findingcitation
Meeting the mental health needs of the population was scored the lowest (2.79).
“It is understandable that meeting the mental health needs of the population was scored the lowest (2.79), given the increase in anxiety and depression during the pandemic [51], but it also exposes the underlying weaknesses of mental health services in a number of settings, as well the global challenges of fragmented health systems to reach populations that need mental health services [52].”
Quote in the paperSubstantial claim - Findingown data
A country's median COVID-SCORE was negatively correlated with the proportion of survey respondents and family members who had COVID-19 (r = -0.34).
“we found there was a negative correlation between a country’s median score and both its number of COVID-19 cases per million (-0.36) and the proportion of survey respondents and family members who had COVID-19 (-0.34).”
- Also stated in: § Discussion · plain
“Conversely, we observed that higher mean country scores were associated with fewer cases per million and a smaller percentage of people who said they or a family member had been affected by COVID-19.”
Quote in the paperSubstantial claim- Rests on an assumption: The proportion of respondents who reported that they or a family member had become sick with COVID-19 is a valid measure of COVID-19 burden.
- Also stated in: § Discussion · plain
- Findingown data
Participants gave the highest score to the belief that their government was cooperating with WHO and other countries.
“Participants gave the highest score to the belief that their government was cooperating with WHO and other countries, though it is an item from which they are far removed.”
Quote in the paperNot a substantial claim - Findingown data
The global mean for item 7 (socioeconomic and health protections for vulnerable groups) was 2.99.
“In our study, the global mean for item 7 (assessing socioeconomic and health protections for vulnerable groups) (2.99), and item 1 (assessing assistance meeting daily needs in terms of income, food, and shelter) (2.90) were scored substantially below the means for all other items.”
Quote in the paperSubstantial claim - Findingown data
The item assessing public perception of government reports and statistics scored above average globally.
“The item assessing public perception of government reports and statistics, key components of a responsible government communication strategy, scored above average globally.”
Quote in the paperNot a substantial claim - Findingown data
A country's median COVID-SCORE was negatively correlated with its number of COVID-19 cases per million (r = -0.36).
“we found there was a negative correlation between a country’s median score and both its number of COVID-19 cases per million (-0.36) and the proportion of survey respondents and family members who had COVID-19 (-0.34).”
- Also stated in: § Discussion · plain
“Conversely, we observed that higher mean country scores were associated with fewer cases per million and a smaller percentage of people who said they or a family member had been affected by COVID-19.”
Quote in the paperSubstantial claim- Rests on an assumption: COVID-19 cases per million is a valid and comparable indicator of pandemic burden across countries.
- Also stated in: § Discussion · plain
- Findingown data
Trust in the national government, as measured by the Wellcome Global Monitor, was associated with the COVID-SCORE in the expected direction.
“Mortality per million from COVID-19, the proportion of respondents who reported that they or a family member had become sick with COVID-19, trust in the national government, as measured by the Wellcome Global Monitor, and trust in the government to successfully address unexpected health threats, as measured in this study, were associated with the COVID-SCORE in expected directions.”
- Also stated in: § Discussion · boosted
“General trust in the national government and trust in the government to successfully address unexpected health threats were clearly associated with country scores for COVID-SCORE-10.”
Quote in the paperNot a substantial claim- Rests on an assumption: The Wellcome Global Monitor measure of trust in national government is comparable across countries.
- Also stated in: § Discussion · boosted
- Findingown data
The global mean for item 1 (assistance meeting daily needs in terms of income, food, and shelter) was 2.90.
“In our study, the global mean for item 7 (assessing socioeconomic and health protections for vulnerable groups) (2.99), and item 1 (assessing assistance meeting daily needs in terms of income, food, and shelter) (2.90) were scored substantially below the means for all other items.”
Quote in the paperSubstantial claim - Findingown data
Item 5 (access to free, reliable COVID-19 testing) scored 2.91.
“Other responsibilities related to health systems functions such as item 5 (assessing access to free, reliable COVID-19 testing) (2.91) and item 8 (assessing the provision of personal protective equipment to healthcare workers) (3.00) received among the lowest scores.”
Quote in the paperNot a substantial claim - Study design and conductreasoning
Participants were recruited through multiple international online panel providers for each country to avoid coverage bias.
“Participants were recruited through multiple international online panel providers for each country to avoid coverage bias: Dynata provided 6,891 respondents from 19 countries; Opinion Access provided 3,391 respondents from 14 countries; Survey Monkey provided 2,239 responses from 12 countries, and Amazon MTurk provided 905 respondents from 8 large countries to avoid demographic skew”
Quote in the paperSubstantial claim - Interpretationown data
The COVID-SCORE survey instrument demonstrated satisfactory validity.
“The COVID-SCORE survey instrument demonstrated satisfactory validity”
Quote in the paperSubstantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
- Rests on an assumption: The survey item assessing trust in the government to successfully address unexpected health threats, including COVID-19, is a valid measure of trust.
- Study design and conductcitation
The instrument was modified from a longer COVID-SCORE-20 survey by an expert panel following a comprehensive literature review.
“The instrument was modified from a longer COVID-SCORE-20 survey [13] by an expert panel, following a comprehensive literature review regarding governmental responses to pandemics and other natural disasters”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [13] J V Lazarus, 2020, Keeping governments accountable: the COVID-19 Assessment Scorecard (COVID-SCORE), Nat Med
Not checked in the free run.
- Interpretationown data
In the studied countries, the public perceives that their government is collaborating with international partners, including WHO.
“Our results indicate that, in these countries, the public perceives that their government is collaborating with international partners, including WHO, and it is important insofar as these organizations play a major role by providing clear, unbiased guidance [45, 46].”
Quote in the paperSubstantial claim - Interpretationown data
The apparent reliability of COVID-SCORE-10 suggests that it may be a new tool that governments can refine and use to monitor how individuals and communities perceive their country's response to COVID-19.
“The apparent reliability of this new instrument suggests that it may be a new tool that governments can refine and use to monitor how individuals and communities perceive their country’s response to COVID-19.”
Quote in the paperSubstantial claim - Study design and conductown data
The external validity of the COVID-SCORE is supported by the results as the score was correlated with valid external indicators in the expected direction.
“The external validity of the score is also supported by the results as the score was correlated with valid external indicators in the expected direction.”
Quote in the paperSubstantial claim - Study design and conductreasoning
The findings of this study are limited due to cross-sectional data, which do not permit causal claims to be made between these scores and external variables.
“The findings of this study are limited due to cross-sectional data, which do not permit causal claims to be made between these scores and external variables.”
Quote in the paperNot a substantial claim - Study design and conductreasoning
All data used for associations with external and internal validation are measured at the country level.
“All data used for the associations with the external and internal validation are measured at the country level as we sought to validate the instrument for measurement at a country level”
Quote in the paperSubstantial claim - Study design and conductown data
The internal validity of the COVID-SCORE-10 instrument is strongly supported by the value of Cronbach's alpha and the results of the PCA indicating that it is unidimensional.
“The internal validity of the instrument is strongly supported by the value of Cronbach’s alpha for the survey instrument and the results of the PCA indicating that it is unidimensional.”
Quote in the paperSubstantial claim
- May combine two claims. 18
- Classified as probably not a substantial claim. 14
May combine two claims.
Findingown dataChina had the highest COVID-SCORE (80.48), followed by South Korea (74.54) and South Africa (64.62).
“China had the highest score, 80.48 (SD = 16.31), followed by South Korea with 74.54 (SD = 18.61) and South Africa with 64.62 (SD = 22.94)”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataThe PCA found that items 6, 4, and 7 contributed the most weight to the first component, while items 1, 10, and 2 contributed the least weight.
“The PCA found that items 6, 4, and 7, respectively, contributed the most weight to the first component with items 1, 10, and 2, respectively, contributing the least weight”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataChina and South Korea had the lowest variability in COVID-SCORE scores, indicating greater homogeneity in perceptions.
“the lowest amount of variability in scores was seen in China and South Korea, indicating greater homogeneity in perceptions among responses, which tended to be very positive”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataHeterogeneity in COVID-SCORE responses was observed across age, gender, education and income, with the greatest amount of heterogeneity observed between countries.
“Heterogeneity in responses was observed across age, gender, education and income with the greatest amount of heterogeneity observed between countries”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataThe first principal component of the COVID-SCORE-10 items explains 60% of variance, with the remaining factors having eigenvalues below 1.
“the first component of the PCA explained 60% of variance with the remaining factors having eigenvalues below 1”
- Also stated in: § Validation of the score · plain
“the first component of the PCA explained 60% of variance with the remaining factors having eigenvalues below 1”
Quote in the paperSubstantial claim- Also stated in: § Validation of the score · plain
May combine two claims.
Findingown dataIn India, respondents with middle and high education levels scored the government higher, while those with low education had greater variability in scores.
“in India those with middle and high education levels scored the government higher, whereas those with a low education level had greater variability in their scores”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataHigher-scoring countries were primarily located in Asia while lower-scoring countries were found in Latin America and Europe.
“Higher-scoring countries were primarily located in Asia while lower-scoring countries were found in Latin America and Europe”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataCOVID-SCORE values did not vary significantly across gender, age group, education, or income level.
“scores did not vary significantly across gender, age group, education, or income level, as illustrated in the boxplots in Fig 1B–1E respectively”
Quote in the paperNot a substantial claim- Rests on an assumption: Online panel respondents, after weighting, are representative of the general population in each country.
- Rests on an assumption: The translations of the survey are semantically and culturally equivalent across languages.
May combine two claims.
Findingown dataAt the country level, age, gender, education, income, World Bank income level, level of human development, and degree to which a country is democratic were not associated with the overall country score.
“At the country level, age, gender, education, income, World Bank income level, level of human development, and degree to which a country is democratic were not associated with the overall country score.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataCOVID-SCORE-10 is reliable and unidimensional.
“We found that COVID-SCORE-10 is reliable and unidimensional.”
- Also stated in: § Discussion · boosted
“The internal validity of the instrument is strongly supported by the value of Cronbach’s alpha for the survey instrument and the results of the PCA indicating that it is unidimensional.”
Quote in the paperSubstantial claim- Also stated in: § Discussion · boosted
May combine two claims.
Findingown dataItem 6 (continued access to necessary services) scored 3.16, closest to the mean of all items (3.11).
“Globally, item 6 (assessing continued access to necessary services) was scored (3.16) closest to the mean of all items (3.11) and was scored above 4.00 only in China and Singapore.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenSample sizes were based on country studies comparing results by demographic characteristic groups.
“Sample sizes were based on country studies comparing results by demographic characteristic groups (eg age and income groups)”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductown dataA pilot study was conducted prior to data collection to test the validity of the content and reliability of the questions with experts and members of the general public, and its data were used to revise the questions.
“Prior to data collection, a pilot study was conducted to test the validity of the content and reliability of the questions with both experts and members of the general public. Data from this pilot study were used to revise the questions in terms of semantics and comprehension”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductcitationThe number of participants who could enrol in each stratum was calculated to reflect the distribution in the general population based on census/survey estimates.
“The number of participants who could enrol in each of these strata was calculated to reflect the distribution in the general population based on census/survey estimates provided by the World Bank and CIA World Factbook”
Quote in the paperSubstantial claimMay combine two claims.
Study design and conductreasoningThe study utilized a minimum of two online panel providers per country to reduce coverage bias, except in Sweden where all data were collected by Dynata.
“The study utilized a minimum of two online panel providers per country to reduce the coverage bias produced by the proprietary nature of each online panel (except in Sweden where all data were collected by Dynata)”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenThe margins of error ranged between 3.5 and 3.9 percentage points.
“The margins of error ranged between 3.5 and 3.9 percentage points”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim. May combine two claims.
Study design and conductnone givenData were weighted by strata with each stratum requiring a minimum of 50 participants.
“Data were weighted by strata with each stratum requiring a minimum of 50 participants”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductreasoningThe order of the ten COVID-SCORE-10 items was randomized for each respondent to reduce question order effect.
“In order to reduce the impact of the question order effect, i.e. to limit potential bias influencing answer choices, the order of the ten items of the COVID-SCORE-10, was randomized for each respondent”
Quote in the paperNot a substantial claimMay combine two claims.
Interpretationown dataThe COVID-SCORE-10 tool is reliable and unidimensional.
“strongly indicating that the tool is both reliable and unidimensional”
- Also stated in: § Validation of the score · boosted
“strongly indicating that the tool is both reliable and unidimensional”
Quote in the paperSubstantial claim- Also stated in: § Validation of the score · boosted
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationWorldometer data have been cited in more than 6,000 peer-reviewed journal articles.
“the website’s data have been cited in more than 6,000 peer-reviewed journal articles [16, 17]”
Quote in the paperNot a substantial claim0 of 2 sources checked- cites [16] Worldometer. COVID-19 Coronavirus Pandemic. 2020. p. 1–22.
Not checked in the free run.
- cites [17] Worldometer. COVID-19 data [Internet]. 2020 [cited 2020 Jun 30]. Available from: https://www.worldometers.info/coronavirus/about/#sources
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenRespondents' identities were verified using IP addresses and mobile phones to ensure each participant was real and unique.
“Respondents’ identities were verified using IP addresses and their mobile phones were verified to ensure that each participant was real and unique upon initial registration”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).
Study design and conductreasoningInterpretation of 'government responses' must be broadly considered given that governance structures (including subnational governments) vary in their pandemic responsibilities.
“Interpretation of “government responses” must be broadly considered given that governance structures (including subnational governments) vary in their pandemic responsibilities.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductcitationResponses from China were not available for the Wellcome Global Monitor trust variable, and China was therefore excluded from analyses using this variable.
“Responses from China were not available, and China was therefore excluded from analyses using this variable [22]”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [22] Wellcome. Wellcome Global Monitor 2018 [Internet]. 2019 [cited 2020 Jun 30]. Available from: https://wellcome.ac.uk/reports/wellcome-global-monitor/2018
Not checked in the free run.
Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).
Interpretationnone givenCOVID-SCORE has a wide range of research applications as political and social scientists continue to explore how trust in government influences public behavior in the context of major health threats.
“COVID-SCORE also has a wide range of research applications as political and social scientists continue to explore how trust in government influences public behavior in the context of major health threats.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S2 (checkable). May combine two claims.
Interpretationown dataBoth the overall ratings and the degree of variability in responses offer valuable guidance to decisionmakers.
“Our data suggest that both the overall ratings and the degree of variability in responses offer valuable guidance to decisionmakers.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductreasoningMethodological limitations of inadequate representation of some segments of society, such as those most marginalized, may have introduced a response bias that could have altered their country's summative score or its associations with other variables.
“Furthermore, although we have taken precautions to achieve representative samples from each country, the methodological limitations of inadequate representation of some segments of a society, such as those most marginalized, may have introduced a response bias that could have altered their country’s summative score or its associations with other variables.”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim. May combine two claims.
InterpretationreasoningThe 10-item instrument validated in this study is easy to administer and yields simple scores that can inform policy debates and guide the design and implementation of COVID-19 prevention, testing and treatment initiatives including communications initiatives.
“The 10-item instrument that we have validated in this study is easy to administer and yields simple scores that can inform policy debates and can guide the design and implementation of COVID-19 prevention, testing and treatment initiatives including communications initiatives.”
Quote in the paperSubstantial claim
The paper relies on this without support.
Online panel respondents, after weighting, are representative of the general population in each country.
“The number of participants who could enrol in each of these strata was calculated to reflect the distribution in the general population based on census/survey estimates provided by the World Bank and CIA World Factbook”
The paper relies on this without support.
The translations of the survey are semantically and culturally equivalent across languages.
“All translators and proofreaders were native speakers who lived in the country to be surveyed”
The paper relies on this without support.
The survey item assessing trust in the government to successfully address unexpected health threats, including COVID-19, is a valid measure of trust.
“The proportion of those surveyed responding “yes” to an item in the study instrument that assesses trust in the government to successfully address unexpected health threats, including COVID-19,which was used in this study to internally validate COVID-SCORE-10”
The paper relies on this without support.
The ten responsibilities measured by COVID-SCORE-10 are key responsibilities of government in COVID-19 response.
“we developed and applied a novel instrument, COVID-SCORE-10, to measure public perception of ten key responsibilities of government.”
The paper relies on this without support.
Public perceptions of government responses are a meaningful measure of government response effectiveness.
“We set out to measure public perceptions of government COVID-19 pandemic response efforts in 19 of the most heavily affected countries and to identify the key factors associated with those perceptions.”
The paper relies on this without support.
COVID-19 mortality per million is a valid and comparable indicator of a country's pandemic burden across countries.
“Mortality per million from COVID-19, the proportion of respondents who reported that they or a family member had become sick with COVID-19, trust in the national government, as measured by the Wellcome Global Monitor, and trust in the government to successfully address unexpected health threats, as measured in this study, were associated with the COVID-SCORE in expected directions.”
The paper relies on this without support.
The Wellcome Global Monitor measure of trust in national government is comparable across countries.
“trust in the national government, as measured by the Wellcome Global Monitor”
The paper relies on this without support.
The proportion of respondents who reported that they or a family member had become sick with COVID-19 is a valid measure of COVID-19 burden.
“the proportion of respondents who reported that they or a family member had become sick with COVID-19”
The paper relies on this without support.
COVID-19 cases per million is a valid and comparable indicator of pandemic burden across countries.
“its number of COVID-19 cases per million (-0.36)”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Many national governments proved untrustworthy and ineffective.
“Additionally, at the national level, many governments showed themselves to be untrustworthy and ineffective.11”
From The Lancet Commission on lessons for the future from the COVID-19 pandemic (2022) · cites this paper as [11]
The survey respondents were a random sample of the populations of the 19 countries surveyed.
“Survey respondents represented a random sample of the populations of 19 countries that comprise around 55% of the global population.”
From A global survey of potential acceptance of a COVID-19 vaccine (2021) · cites this paper as [21]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Ecuador's score standard deviation differs between the text and table
MinorThe results text gives Ecuador's COVID-SCORE standard deviation as 0.68, whereas Table 1 gives 23.05.
“The three lowest-scoring countries were Ecuador with a score of 35.76 (SD = 0.68)”
“| Ecuador (n = 741) | 2.08 (1.19) | 2.90 (1.36) | 2.17 (1.24) | 2.18 (1.26) | 2.27 (1.37) | 2.64 (1.37) | 2.59 (1.32) | 2.31 (1.32) | 2.32 (1.27) | 2.85 (1.28) | 35.76 (23.05) |”
Mortality regression confidence interval is inconsistent
MinorThe results text reports a lower confidence limit of -0.003, which excludes its reported coefficient of -0.01. Table 2 instead gives the lower limit as -0.03.
“A weak and negative correlation was found for the mortality from COVID-19 per million (r = -0.16, β = -0.01 (-0.003, 0.02).”
“| Country-specific COVID-19 mortality per million (Worldometer data) | -0.01 (-0.03, 0.02) | -0.16 |”
Items 1 and 7 are not below all other item means
MinorThe discussion says items 1 and 7 scored below the means for all other items, but it also identifies item 9, at 2.79, as the lowest-scoring item. Table 1 likewise lists item 9 below both item 1 and item 7.
“item 7 (assessing socioeconomic and health protections for vulnerable groups) (2.99), and item 1 (assessing assistance meeting daily needs in terms of income, food, and shelter) (2.90) were scored substantially below the means for all other items.”
“The lowest-scoring item was item 9 (addressing mental health service availability during the pandemic) with an average score across all countries of 2.79 (1.31).”
Countries scoring above 4 on item 6 are misidentified
MinorThe discussion names China and Singapore, but Table 1 gives item 6 scores of 4.26 for China, 4.19 for South Korea, and 3.30 for Singapore.
“item 6 (assessing continued access to necessary services) was scored (3.16) closest to the mean of all items (3.11) and was scored above 4.00 only in China and Singapore.”
“| South Korea (n = 619) | 3.67 (1.02) | 3.98 (1.01) | 4.01 (0.99) | 3.93 (1.05) | 3.93 (1.07) | 4.19 (0.87) | 3.94 (1.01) | 4.34 (0.82) | 3.70 (1.05) | 4.12 (0.87) | 74.54 (18.61) |”
Cites
4 retracted
RETRACTED: Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19
Mehra, M. R., Desai, S. S., Kuy, S., Henry, T. D., & Patel, A. N. (2020) · New England Journal of Medicine · doi:10.1056/nejmoa2007621 · Cited by 1,428 · see citing works
RetractedMehra, M. R., Desai, S. S., Ruschitzka, F. T., & Patel, A. N. (2020) · The Lancet · doi:10.1016/s0140-6736(20)31180-6 · Cited by 1,201 · see citing works
RetractedMehra, M. R., Ruschitzka, F., & Patel, A. N. (2020) · The Lancet · doi:10.1016/s0140-6736(20)31324-6 · Cited by 553 · see citing works
RetractedMehra, M. R., Desai, S. S., Kuy, S., Henry, T. D., & Patel, A. N. (2020) · New England Journal of Medicine · doi:10.1056/nejmc2021225 · Cited by 463 · see citing works
RetractedHolmes, E. A., O'Connor, R. C., Perry, V. H., Tracey, I., Wessely, S., Arseneault, L., Ballard, C., Christensen, H., Cohen Silver, R., Everall, I., et al. (2020) · The Lancet Psychiatry · doi:10.1016/s2215-0366(20)30168-1 · Cited by 5,715 · see citing works
Using social and behavioural science to support COVID-19 pandemic response
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“Moreover, crises, and particularly epidemics, raise real barriers to efforts to align individual and collective interests, which challenge the adoption of behavioural changes that are essential to prevent the spread of disease [24].”
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Score normalization in multimodal biometric systems
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The COVID-19 pandemic and health inequalities
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BackgroundWhat Are the Origins of Political Trust?
Mishler, W., & Rose, R. (2001) · Comparative Political Studies · doi:10.1177/0010414001034001002 · Cited by 1,410 · see citing works
Trust and compliance to public health policies in times of COVID-19
Bargain, O., & Aminjonov, U. (2020) · Journal of Public Economics · doi:10.1016/j.jpubeco.2020.104316 · Cited by 921 · see citing works
Challenges and opportunities in global mental health: a research-to-practice perspective
Wainberg, M. L., Scorza, P., Shultz, J. M., Helpman, L., Mootz, J. J., Johnson, K. A., Neria, Y., Bradford, J.-M. E., Oquendo, M. A., & Arbuckle, M. R. (2017) · Current Psychiatry Reports · doi:10.1007/s11920-017-0780-z · Cited by 875 · cited 1× · see citing works
“79), given the increase in anxiety and depression during the pandemic [51], but it also exposes the underlying weaknesses of mental health services in a number of settings, as well the global challenges of fragmented health systems to reach populations that need mental health services [52].”
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Public health and public trust: Survey evidence from the Ebola Virus Disease epidemic in Liberia
Blair, R. A., Morse, B. S., & Tsai, L. L. (2017) · Social Science & Medicine · doi:10.1016/j.socscimed.2016.11.016 · Cited by 614 · see citing works
The challenges of modeling and forecasting the spread of COVID-19
Bertozzi, A. L., Franco, E., Mohler, G., Short, M. B., & Sledge, D. (2020) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2006520117 · Cited by 557 · see citing works
The Role of Public Trust During Pandemics: Implications for Crisis Communication
Siegrist, M., & Zingg, A. (2014) · European Psychologist · doi:10.1027/1016-9040/a000169 · Cited by 420 · see citing works
Seale, H., Heywood, A. E., Leask, J., Sheel, M., Thomas, S. L., Dürrheim, D. N., Bolsewicz, K., & Kaur, R. (2020) · PLoS ONE · doi:10.1371/journal.pone.0235112 · Cited by 284 · see citing works
COVID-19: the medium is the message
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The Emergence of COVID-19 in the US: A Public Health and Political Communication Crisis
Gollust, S. E., Nagler, R. H., & Fowler, E. F. (2020) · Journal of Health Politics Policy and Law · doi:10.1215/03616878-8641506 · Cited by 278 · see citing works
Quinn, S. C., Parmer, J., Freimuth, V. S., Hilyard, K. M., Musa, D., & Kim, K. H. (2013) · Biosecurity and Bioterrorism Biodefense Strategy Practice and Science · doi:10.1089/bsp.2012.0048 · Cited by 235 · see citing works
Enhancing global health communication during a crisis: lessons from the COVID-19 pandemic
Ratzan, S. C., Sommariva, S., & Rauh, L. D. (2020) · Public Health Research & Practice · doi:10.17061/phrp3022010 · Cited by 225 · see citing works
Self-citationMuto, K., Yamamoto, I., Nagasu, M., Tanaka, M., & Wada, K. (2020) · PLoS ONE · doi:10.1371/journal.pone.0234292 · Cited by 202 · see citing works
Trust During the Early Stages of the 2009 H1N1 Pandemic
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Strengthening health systems resilience. Key concepts and strategies
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Trust Influences Response to Public Health Messages During a Bioterrorist Event
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Mismanagement of Covid-19: lessons learned from Italy
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Hensel, L., Witte, M., Caria, S. A., et al. (2020) · doi:10.31234/osf.io/3kfmh · Cited by 72 · see citing works
Authoritarian Orientations and Political Trust in East Asian Societies
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Communicating in Times of Uncertainty: The Need for Trust
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Keeping governments accountable: the COVID-19 Assessment Scorecard (COVID-SCORE)
Lazarus, J. V., Binagwaho, A., El-Mohandes, A. A. E., Fielding, J. E., Larson, H. J., Plasència, A., Andriukaitis, V., & Ratzan, S. C. (2020) · Nature Medicine · doi:10.1038/s41591-020-0950-0 · Cited by 52 · see citing works
Self-citationOrganization and financing of public health services in Europe: country reports
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Race, alienation, and interpersonal mistrust
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COVID-19 Reveals Urgent Need to Strengthen the World Health Organization
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Trust in science and experts during the COVID-19 outbreak in ItalyPreprint
Battiston, P., Kashyap, R., & Rotondi, V. (2020) · doi:10.31235/osf.io/5tch8 · Cited by 7 · see citing works
Trust and compliance to public health policies in times of COVID-19Preprint
Bargain, O., & Aminjonov, U. (2020) · RePEc: Research Papers in Economics · Cited by 6 · see citing works
Muscat, N. A., & Kluge, H. H. P. (2020) · European Journal of Public Health · doi:10.1093/eurpub/ckaa089 · Cited by 5 · see citing works
Organization and financing of public health services in Europe: Country reports [Internet]
Rechel, B., Maresso, A., Sagan, A., et al. (2018) · Cited by 3 · see citing works
Flagged first, then by citations
Research works printed but not linked: 2
- JJV Bavel, Using social and behavioural science to support COVID-, 4, 460
- 2020, Strengthening the Health Systems Response to COVID-19—Technical guidance #6
Cited by
Sorted by citations
A global survey of potential acceptance of a COVID-19 vaccine
Lazarus, J. V., Ratzan, S. C., Palayew, A., Gostin, L. O., Larson, H. J., Rabin, K., Kimball, S., & El-Mohandes, A. (2021) · Nature Medicine · doi:10.1038/s41591-020-1124-9 · Cited by 2,904 · see citing works
Self-citationThe Lancet Commission on lessons for the future from the COVID-19 pandemic
Sachs, J. D., Karim, S. S. A., Aknin, L., Allen, J., Brosbøl, K., Colombo, F., Barron, G. C., Espinosa, M. F., Gaspar, V., Gaviria, A., et al. (2022) · The Lancet · doi:10.1016/s0140-6736(22)01585-9 · Cited by 842 · see citing works
Self-citationAtypical interoception as a common risk factor for psychopathology: A review
Brewer, R., Murphy, J., & Bird, G. (2021) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2021.07.036 · Cited by 180 · see citing works
Tangcharoensathien, V., Bassett, M. T., Meng, Q., & Mills, A. (2021) · BMJ · doi:10.1136/bmj.n83 · Cited by 122 · see citing works
- Authors
- Lazarus, J. V., Ratzan, S., Palayew, A., Billari, F. C., Binagwaho, A., Kimball, S., Larson, H. J., Melegaro, A., Rabin, K., White, T. M., & El-Mohandes, A.
- Affiliations
- Barcelona Institute for Global Health (ES)
- City University of New York (US)
- Bocconi University (IT)
- Emerson College (US)
- University of Washington (US)
- Corresponding author
- Lazarus, Jeffrey V.
- ORCID
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2020-10-06
- Volume
- 15
- Issue
- 10
- Pages
- e0240011
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC7538106
- OpenAlex
- W3092412936
- Semantic Scholar
- 4b68e4539bc0ce2b2a9901e624097be27b6a64a0
- Cited by
- 232
- References
- 41
- Citations by year
- 2026: 5 · 2025: 15 · 2024: 28 · 2023: 35 · 2022: 73 · 2021: 67 · 2020: 9
- FWCI
- 55.44
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- LSHTM Research Online (London School of Hygiene and Tropical Medicine) (acceptedVersion)
- Archivio istituzionale della Ricerca - Bocconi (submittedVersion, cc-by)
- RePEc: Research Papers in Economics (submittedVersion)
- Dipòsit Digital de la Universitat de Barcelona (Universitat de Barcelona) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by)
- Funders
- Research Foundation of The City University of New York (90057-00-99)
- Università Bocconi
- Topics
- Social Sciences › Communication › Communication and COVID-19 Impact
- Social Sciences › Sociology and Political Science › COVID-19 Prevention and Impact
- Physical Sciences › Mathematics › Modeling and Simulation › COVID-19 epidemiological studies
- Keywords
- COVID-19 pandemic, public perception, government response, public trust in government, COVID-19 mortality, COVID-19 morbidity, socio-economic development, democracy, demographic heterogeneity, citizen participation
- MeSH terms
- Betacoronavirus, COVID-19, SARS-CoV-2, Adolescent, Adult, Aged, China, Cross-Sectional Studies, Ecuador, Female, Government, Humans, Male, Middle Aged, Pneumonia, Viral, Public Health, Public Opinion, Quarantine, Surveys and Questionnaires, Research Design, Coronavirus Infections, Principal Component Analysis, Trust, Young Adult, Pandemics
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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