The DOI matches its Crossref record; 73 of the 73 references it cites were found in a registry or an index.
Impact of COVID-19 outbreak on the mental health status of undergraduate medical students in a COVID-19 treating medical college: a prospective longitudinal study
Open accessAbstract
Background: The COVID-19 pandemic is found to affect the mental health of the population. Undergraduate medical students are especially prone to mental health disorders and hence could be more vulnerable to the impact of the pandemic. Methods: A prospective longitudinal study was conducted on 217 undergraduate medical students in a medical college at Chennai, India. Depression, anxiety, and stress levels were recorded using Depression Anxiety Stress Scale 21 Items (DASS21) before and during the COVID-19 outbreak in India in December 2019 and June 2020, respectively. In the follow-up survey, in addition to DASS21, the Pittsburgh Sleep Quality Index to assess sleep quality and a self-administered questionnaire to assess the impact of COVID-19 related stressors were used. The self-administered questionnaire assessed the status of COVID-19 testing, interactions with COVID-19 patients, self-perceived levels of concerns and worries related to academics (COVID-19-AA (academic apprehensions)) and those pertaining to the self and family/friends (COVID-19-GA (general apprehensions)). Cross-sectional and longitudinal comparison of overall scores of depression, anxiety, and stress and scores stratified by gender, year of study, place of residence and monthly family income were performed. Predictors for depression, anxiety, and stress during COVID-19 were investigated using adjusted binary logistic regression analysis and results were expressed as adjusted odds ratio with 95% confidence interval (CI). A P value < 0.05 was considered statistically significant. Results: The average scores of depression, anxiety, and stress during the baseline survey were 7.55 ± 7.86, 4.6 ± 6.19 and 7.31 ± 7.34 with the prevalence (95% Cl) of 33.2% [27–39.9%], 21.2% [16–27.2%] and 20.7% [15.5–26.7%]; in follow-up survey, the mean scores were 8.16 ± 8.9, 6.11 ± 7.13 and 9.31 ± 8.18 with the prevalence being 35.5% [29.1–42.2%], 33.2% [27–39.9%] and 24.9% [19.3–31.2%] for depression, anxiety, and stress respectively. There was a significant increase in both the prevalence and levels of anxiety and stress ( P < 0.001), with depression remaining unchanged during COVID-19, irrespective of gender, year of study, place of residence and family’s monthly income. Poor sleep quality, higher levels of baseline depression, anxiety, and stress, higher COVID-19-GA, COVID-19 patients in family/friends and direct interactions with COVID-19 patients were found to be significant predictors of negative mental health in undergraduate medical students. COVID-19-AA was not significantly associated with depression, anxiety, and stress. Conclusion: The COVID-19 pandemic appears to negatively affect the mental health of the undergraduate medical students with the prevalence and levels of anxiety and stress being increased, and depression symptoms remaining unaltered. Addressing and mitigating the negative effect of COVID-19 on the mental health of this population is crucial.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
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?
The cited source says what the claim attributes to it.
In the citing paper
“Moreover, Covid-19 has had a drastic impact on the population’s mental health [40–43], including medical students [44–48].”
From Effectiveness of online mindfulness interventions on medical students’ mental health: a systematic review (2021) · cites this paper as [48]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research
Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989) · Psychiatry Research · doi:10.1016/0165-1781(89)90047-4 · Cited by 35,234
Early transmission dynamics in Wuhan, China, of novel coronavirus-infected pneumonia
Li, Q., Guan, X., Wu, P., Wang, X., Zhou, L., Tong, Y., Ren, R., Leung, K. S. M., Lau, E. H. Y., Wong, J. Y., et al. (2020) · New England Journal of Medicine · doi:10.1056/nejmoa2001316 · Cited by 16,575
The Psychological Impact of Quarantine and How to Reduce It: Rapid Review of the Evidence
Brooks, S. K., Webster, R. K., Smith, L. E., Woodland, L., Wessely, S., Greenberg, N., & Rubin, G. J. (2020) · doi:10.2139/ssrn.3532534 · Cited by 16,394
The psychological impact of quarantine and how to reduce it: Rapid review of the evidence
Brooks, S. K., Webster, R. K., Smith, L. E., Woodland, L., Wessely, S., Greenberg, N., & Rubin, G. J. (2020) · The Lancet · doi:10.1016/s0140-6736(20)30460-8 · Cited by 16,378
Lovibond, P. F., & Lovibond, S. H. (1995) · Behaviour Research and Therapy · doi:10.1016/0005-7967(94)00075-u · Cited by 14,523
Wang, C., Pan, R., Wan, X., Tan, Y., Xu, L., Ho, C. S., & Ho, R. C. (2020) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph17051729 · Cited by 9,923
The psychological impact of the COVID-19 epidemic on college students in China
Cao, W., Fang, Z., Hou, G., Han, M., Xu, X., Dong, J., & Zheng, J. (2020) · Psychiatry Research · doi:10.1016/j.psychres.2020.112934 · Cited by 5,843
O’connor, B. P. (2000) · Behavior Research Methods, Instruments, & Computers · doi:10.3758/bf03200807 · Cited by 4,116
Mental health problems and social media exposure during COVID-19 outbreak
Gao, J., Zheng, P., Jia, Y., Chen, H., Mao, Y., Chen, S., Wang, Y., Fu, H., & Dai, J. (2020) · PLoS ONE · doi:10.1371/journal.pone.0231924 · Cited by 2,830
Mental Health Problems and Social Media Exposure During COVID-19 Outbreak
Gao, J., Zheng, P., Jia, Y., Chen, H., Mao, Y., Chen, S., Wang, Y., Fu, H., & Dai, J. (2020) · SSRN Electronic Journal · doi:10.2139/ssrn.3541120 · Cited by 2,830
Pierce, M., Hope, H., Ford, T., Hatch, S., Hotopf, M., John, A., Kontopantelis, E., Webb, R., Wessely, S., McManus, S., et al. (2020) · The Lancet Psychiatry · doi:10.1016/s2215-0366(20)30308-4 · Cited by 2,621
2019-nCoV epidemic: Address mental health care to empower society
Bao, Y., Sun, Y., Meng, S., Shi, J., & Lu, L. (2020) · The Lancet · doi:10.1016/s0140-6736(20)30309-3 · Cited by 2,038
Crawford, J. R., & Henry, J. D. (2003) · British Journal of Clinical Psychology · doi:10.1348/014466503321903544 · Cited by 1,756
Epidemic of COVID-19 in China and associated psychological problems.
Ahmed, M. Z., Ahmed, O., Aibao, Z., Hanbin, S., Siyu, L., & Ahmad, A. (2020) · Asian Journal of Psychiatry · doi:10.1016/j.ajp.2020.102092 · Cited by 1,390
González-Sanguino, C., Ausín, B., Castellanos, M. Á., Saiz, J., López-Gómez, A., Ugidos, C., & Muñoz, M. (2020) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2020.05.040 · Cited by 1,373
Stress and psychological distress among SARS survivors 1 year after the outbreak
Lee, A. M., Wong, J. G., McAlonan, G. M., Cheung, V., Cheung, C., Sham, P. C., Chu, C.-M., Wong, P.-C., Tsang, K. W., & Chua, S. E. (2007) · The Canadian Journal of Psychiatry · doi:10.1177/070674370705200405 · Cited by 1,195
Lee, S. M., Kang, W. S., Cho, A.-R., Kim, T., & Park, J. K. (2018) · Comprehensive Psychiatry · doi:10.1016/j.comppsych.2018.10.003 · Cited by 1,112
Changes in sleep pattern, sense of time and digital media use during COVID‐19 lockdown in Italy
Cellini, N., Canale, N., Mioni, G., & Costa, S. (2020) · Journal of Sleep Research · doi:10.1111/jsr.13074 · Cited by 1,079
(2020) · Cited by 1,012
The Global Prevalence of Anxiety Among Medical Students: A Meta-Analysis
Tian-Ci Quek, T., Wai-San Tam, W., X. Tran, B., Zhang, M., Zhang, Z., Su-Hui Ho, C., & Chun-Man Ho, R. (2019) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph16152735 · Cited by 990
Understanding, compliance and psychological impact of the SARS quarantine experience
REYNOLDS, D. L., GARAY, J. R., DEAMOND, S. L., MORAN, M. K., GOLD, W., & STYRA, R. (2008) · Epidemiology and Infection · doi:10.1017/s0950268807009156 · Cited by 895
Huckins, J. F., daSilva, A. W., Wang, W., Hedlund, E., Rogers, C., Nepal, S. K., Wu, J., Obuchi, M., Murphy, E. I., Meyer, M. L., et al. (2020) · Journal of Medical Internet Research · doi:10.2196/20185 · Cited by 759
McAlonan, G. M., Lee, A. M., Cheung, V., Cheung, C., Tsang, K. W., Sham, P. C., Chua, S. E., & Wong, J. G. (2007) · The Canadian Journal of Psychiatry · doi:10.1177/070674370705200406 · Cited by 755
The Impact of COVID-19 on Medical Education
Ferrel, M., & Ryan, J. J. (2020) · Cureus · doi:10.7759/cureus.7492 · Cited by 684
Depression, Stigma, and Suicidal Ideation in Medical Students
Schwenk, T. L., Davis, L., & Wimsatt, L. A. (2010) · JAMA · doi:10.1001/jama.2010.1300 · Cited by 676
COVID stress syndrome: Concept, structure, and correlates
Taylor, S., Landry, C. A., Paluszek, M. M., Fergus, T. A., McKay, D., & Asmundson, G. J. G. (2020) · Depression and Anxiety · doi:10.1002/da.23071 · Cited by 673
Kalmbach, D. A., Anderson, J. R., & Drake, C. L. (2018) · Journal of Sleep Research · doi:10.1111/jsr.12710 · Cited by 620
Taghrir, M. H., Borazjani, R., & Shiraly, R. (2020) · Archives of Iranian Medicine · doi:10.34172/aim.2020.06 · Cited by 585
Chew-Graham, C. A., Rogers, A. E., & Yassin, N. (2003) · Medical Education · doi:10.1046/j.1365-2923.2003.01627.x · Cited by 582
Five myths about variable selection
Heinze, G., & Dunkler, D. (2017) · Transplant International · doi:10.1111/tri.12895 · Cited by 528
Majumdar, P., Biswas, A., & Sahu, S. (2020) · Chronobiology International · doi:10.1080/07420528.2020.1786107 · Cited by 477
Choi, B., Jegatheeswaran, L., Minocha, A., Alhilani, M., Nakhoul, M., & Mutengesa, E. (2020) · BMC Medical Education · doi:10.1186/s12909-020-02117-1 · Cited by 458
First year medical student stress and coping in a problem‐based learning medical curriculum
Moffat, K. J., McConnachie, A., Ross, S., & Morrison, J. M. (2004) · Medical Education · doi:10.1046/j.1365-2929.2004.01814.x · Cited by 455
Asmundson, G. J. G., Paluszek, M. M., Landry, C. A., Rachor, G. S., McKay, D., & Taylor, S. (2020) · Journal of Anxiety Disorders · doi:10.1016/j.janxdis.2020.102271 · Cited by 451
Nguyen, H. T., Do, B. N., Khuê, P. M., Giang, K. B., Dam, H. T. B., Nguyen, T. T., Nguyen, T. T. P., Nguyen, Y. H., Sørensen, K., Pleasant, A., et al. (2020) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph17114164 · Cited by 417
Depression, Anxiety and Symptoms of Stress among Hong Kong Nurses: A Cross-sectional Study
Cheung, T. C. C., & Yip, P. S. F. (2015) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph120911072 · Cited by 405
Khasawneh, A. I., Abu-Humaidan, A. H. A., Alsulaiman, J., Bloukh, S., Ramadan, M., Al‐Shatanawi, T. N., Awad, H. H., Hijazi, W. Y., Al-Kammash, K. R., Obeidat, N. A., et al. (2020) · Frontiers in Public Health · doi:10.3389/fpubh.2020.00253 · Cited by 384
Lonely young adults in modern Britain: findings from an epidemiological cohort study
Matthews, T., Danese, A., Caspi, A., Fisher, H. L., Goldman-Mellor, S., Kepa, A., Moffitt, T. E., Odgers, C. L., & Arseneault, L. (2019) · Psychological Medicine · doi:10.1017/s0033291718000788 · Cited by 381
The psychological impacts of a COVID-19 outbreak on college students in China: a longitudinal study
Li, H. Y., Cao, H., Leung, D. Y. P., & Mak, Y. W. (2020) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph17113933 · Cited by 372
WHAT SAMPLE SIZE is "ENOUGH" in INTERNET SURVEY RESEARCH?
Hill, R. L., & Hamilton, W. P. (1998) · Cited by 359
Psychometric properties of the Depression Anxiety Stress Scales (DASS) in depressed clinical samples
Page, A. C., Hooke, G. R., & Morrison, D. L. (2007) · British Journal of Clinical Psychology · doi:10.1348/014466506x158996 · Cited by 301
Bergmann, C., Muth, T., & Loerbroks, A. (2019) · Medical Education Online · doi:10.1080/10872981.2019.1603526 · Cited by 270
Stress, coping and health: enhancing well‐being during medical school
WOLF, T. M. (1994) · Medical Education · doi:10.1111/j.1365-2923.1994.tb02679.x · Cited by 240
Sleep Disturbances and Suicidal Behavior in Patients With Major Depression
YoEargon, M., Kara, H., & Solmaz, M. (1997) · The Journal of Clinical Psychiatry · doi:10.4088/jcp.v58n0602 · Cited by 231
Giri, P., Baviskar, M. P., & Phalke, D. (2013) · Annals of Medical and Health Sciences Research · doi:10.4103/2141-9248.109488 · Cited by 222
Al-Khani, A. M., Sarhandi, M. I., Zaghloul, M. S., Ewid, M., & Saquib, N. (2019) · BMC Research Notes · doi:10.1186/s13104-019-4713-2 · Cited by 221
Treating comorbid anxiety and depression: psychosocial and pharmacological approaches
Coplan, J. D. (2015) · World Journal of Psychiatry · doi:10.5498/wjp.v5.i4.366 · Cited by 207
Chen, R., Chou, K.-R., Huang, Y.-J., Wang, T.-S., Liu, S.-Y., & Ho, L.-Y. (2006) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2005.03.006 · Cited by 202
White Coat, Mood Indigo — Depression in Medical School
Rosenthal, J. M., & Okie, S. (2005) · New England Journal of Medicine · doi:10.1056/nejmp058183 · Cited by 197
The Mental Health of Hospital Workers Dealing with Severe Acute Respiratory Syndrome
Lu, Y.-C., Shu, B., Chang, Y.-Y., & Lung, F. (2006) · Psychotherapy and Psychosomatics · doi:10.1159/000095443 · Cited by 192
Associations between poor sleep quality and different measures of obesity
Rahe, C., Czira, M. E., Teismann, H., & Berger, K. (2015) · Sleep Medicine · doi:10.1016/j.sleep.2015.05.023 · Cited by 182
Sleep patterns and insomnia in young adults: A national survey of Norwegian university students
Sivertsen, B., Vedaa, Ø., Harvey, A. G., Glozier, N., Pallesen, S., Aarø, L. E., Lønning, K. J., & Hysing, M. (2019) · Journal of Sleep Research · doi:10.1111/jsr.12790 · Cited by 177
Anxiety among university students during the SARS epidemic in Hong Kong
Wong, T. W., Gao, Y., & Tam, W. (2006) · Stress and Health · doi:10.1002/smi.1116 · Cited by 171
Batawi, S., Tarazan, N., Al-Raddadi, R. M., Qasim, E. A., Sindi, A., Johni, S. A., Al-Hameed, F. M., Arabi, Y. M., Uyeki, T. M., & Alraddadi, B. M. (2019) · Health and Quality of Life Outcomes · doi:10.1186/s12955-019-1165-2 · Cited by 162
Treatment of insomnia associated with clinical depression
Jindal, R. D. (2003) · Sleep Medicine Reviews · doi:10.1016/s1087-0792(03)00025-x · Cited by 155
Medical graduate views on statistical learning needs for clinical practice: a comprehensive survey
MacDougall, M., Cameron, H. S., & Maxwell, S. R. J. (2019) · BMC Medical Education · doi:10.1186/s12909-019-1842-1 · Cited by 153
Molodynski, A., Lewis, T., Kadhum, M., Farrell, S., Chelieh, M. L., de Almeida, T. F., Masri, R., Kar, A., Volpe, U., Moir, F., et al. (2020) · International Review of Psychiatry · doi:10.1080/09540261.2020.1738064 · Cited by 140
Tao, S., Wu, X., Zhang, Y., Zhang, S., Tong, S., & Tao, F. (2017) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph14020185 · Cited by 125
Johal, S. (2009) · PubMed · Cited by 110
Filho, C. I. S., Rodrigues, W. C. D. L. V., de Castro, R. B., Marçal, A. A., Pavelqueires, S., Takano, L., de Oliveira, W. L., & Neto, C. I. S. (2021) · Research Society and Development · doi:10.33448/rsd-v10i6.15406 · Cited by 107
Arora, R. S., Thawani, R., & Goel, A. (2015) · Cureus · doi:10.7759/cureus.361 · Cited by 91
Depression, anxiety and stress in a cohort of Australian dentistry students
Stormon, N., Ford, P. J., Kisely, S. R., Bartle, E. K., & Eley, D. S. (2019) · European Journal Of Dental Education · doi:10.1111/eje.12459 · Cited by 90
Medical student suicide, 1989-1994
Hays, L. R., Cheever, T., & Patel, P. (1996) · American Journal of Psychiatry · doi:10.1176/ajp.153.4.553 · Cited by 87
Neuropsychological long-term sequelae of Ebola virus disease survivors – A systematic review
Lötsch, F., Schnyder, J. L., Goorhuis, A., & Grobusch, M. P. (2017) · Travel Medicine and Infectious Disease · doi:10.1016/j.tmaid.2017.05.001 · Cited by 82
Cultivating psychological well-being in Hong Kong's future doctors
Wong, J. G. W. S., Patil, N., Beh, S., Cheung, E. P. T., Wong, V., Chan, L., & Mak, F. L. (2005) · Medical Teacher · doi:10.1080/01421590500237945 · Cited by 75
Yadav, R., Gupta, S., & Malhotra, A. K. (2016) · International Journal of Community Medicine and Public Health · doi:10.18203/2394-6040.ijcmph20161386 · Cited by 49
Agarwal, V., Gupta, L., Davalbhakta, S., Misra, D. P., Agarwal, V., & Goel, A. (2020) · medRxiv · doi:10.1101/2020.04.11.20061333 · Cited by 38
Ren, Y.-L., Zhou, Y.-J., Qian, W., Zhang, X.-Y., Liu, Z.-K., Wang, R., Qi, L., Yang, J., Song, X.-L., Zeng, L.-Y., et al. (2020) · Brain, behavior, and immunity · doi:10.1016/j.bbi.2020.05.004 · Cited by 36
Sleepiness or Excessive Daytime Somnolence
EdD, E. M., & Flores, S. (2009) · Geriatric Nursing · doi:10.1016/j.gerinurse.2008.11.004 · Cited by 32
Pre-existing mental health problems in medical students: a retrospective survey
Yates, J., James, D. K., & Aston, I. (2008) · Medical Teacher · doi:10.1080/01421590701797630 · Cited by 30
Mume, C. O., Olawale, K. O., & Osundina, A. F. (2011) · South African Journal of Psychiatry · doi:10.4102/sajpsychiatry.v17i4.311 · Cited by 29
Karthik, S., Ilango, S., & Siva, T. (2020) · medRxiv · doi:10.1101/2020.06.13.20130153 · Cited by 20
Private Duty Attendants in Assisted Living
Flores, S., & Mitty, E. (2009) · Geriatric Nursing · doi:10.1016/j.gerinurse.2009.06.003 · Cited by 1
Flagged first, then by citations
Research works printed but not linked: 2
- Ahmed, 2020b, Concerns of undergraduate medical students towards an outbreak of COVID-19, International Journal of Current Medical and Pharmaceutical Research, 6, 5055
- Sartorao Filho, 2020, Impact Of covid-19 pandemic on mental health of medical students: a cross-sectional study using GAD-7 and PHQ-9 questionnaires, MedRxiv, 10.1101/2020.06.24.20138925 · DOI
Cited by
Sorted by citations
Robinson, E., Sutin, A. R., Daly, M., & Jones, A. (2022) · Journal of Affective Disorders · doi:10.1016/j.jad.2021.09.098 · Cited by 1,147
Hawes, M. T., Szenczy, A. K., Klein, D. N., Hajcak, G., & Nelson, B. D. (2021) · Psychological Medicine · doi:10.1017/s0033291720005358 · Cited by 834
Alimoradi, Z., Broström, A., Tsang, H. W. H., Griffiths, M. D., Haghayegh, S., Ohayon, M. M., Lin, C., & Pakpour, A. H. (2021) · EClinicalMedicine · doi:10.1016/j.eclinm.2021.100916 · Cited by 415
Jahrami, H., Alhaj, O. A., Humood, A. M., Alenezi, A. F., Fekih‐Romdhane, F., Al-Rasheed, M. M., Saif, Z., Bragazzi, N. L., Pandi-Perumal, S. R., BaHammam, A. S., et al. (2022) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2022.101591 · Cited by 359
Chang, J.-J., Ji, Y., Li, Y.-H., Pan, H.-F., & Su, P.-Y. (2021) · Journal of Affective Disorders · doi:10.1016/j.jad.2021.05.109 · Cited by 275
Metadata
- Authors
- Saraswathi, I., Saikarthik, J., Senthil Kumar, K., Madhan Srinivasan, K., Ardhanaari, M., & Gunapriya, R.
- Affiliations
- Department of Physiology, Madha Medical College and Research Institute, Chennai, Tamil Nadu, India
- Department of Basic Medical Sciences, Majmaah University, Ar-Riyadh, Saudi Arabia
- Department of General Medicine, Madha Medical College and Research Institute, Chennai, Tamil Nadu, India
- Department of Psychiatry, Meenakshi Medical College Hospital and Research Institute, Enathur, Tamil Nadu, India
- Department of Anatomy, Saveetha Medical College Hospital, Thandalam, Tamil Nadu, India
- Venue
- PeerJ
- Publisher
- PeerJ
- Published
- 2020-10-16
- Volume
- 8
- Pages
- e10164
- ISSN
- 2167-8359 (ISSN-L)
- PMC
- PMC7571415
- OpenAlex
- W3093298644
- Cited by
- 608
- References
- 71
- Citations by year
- 2026: 11 · 2025: 20 · 2024: 244 · 2023: 67 · 2022: 167 · 2021: 97 · 2020: 2
- FWCI
- 33.33
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- PeerJ (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Greater South Information System
- Topics
- Social Sciences › Psychology › Clinical Psychology › COVID-19 and Mental Health
- Health Sciences › Health Professions › General Health Professions › Healthcare professionals’ stress and burnout
- Social Sciences › Psychology › Developmental and Educational Psychology › Student Stress and Coping
- Keywords
- COVID-19 pandemic, mental health, undergraduate medical students, depression, anxiety, stress, sleep quality, gender differences, predictors of depression, DASS-21, Pittsburgh Sleep Quality Index, medical education during pandemic
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.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review