Systematic Review and Meta-Analyses of Time-Use, Productivity, and Labor Outcomes Among Unpaid Cancer Caregivers

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

Kamal et al show that employed caregivers reduce working hours and experience other forms of productivity loss.

“Meanwhile, Kamal et al 7 show that employed caregivers reduce working hours and experience other forms of productivity loss.”

• cites [7] sourceSupported

Probably not a substantial claim: may not pass S3 (load-bearing).

Hutchinson et al estimated across 11 counties that patients with ovarian cancer receive an average of 800 hours of unpaid care per year.

“Hutchinson et al 6 estimated across 11 counties that patients with ovarian cancer receive an average of 800 hours of unpaid care per year.”

• cites [6] sourceSupported

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

A Canadian labor market study found that female caregivers were 73% more likely than men to leave the labor force and five times more likely to reduce working hours.

“A Canadian labor market study found that female caregivers were 73% more likely than men to leave the labor force and five times more likely to reduce working hours.5”

• cites [5] sourcePartly supported

  The Abstract Results report that, after adjustment for labor-market roles, women were 73% more likely than men to leave the labor market and more than five times more likely to work part-time due to informal care. The fivefold figure applies specifically to working part-time, not to every form of reduced working hours. (LLM, conf=0.85)

  Experimental — accuracy not yet measured

May combine two claims.

Female caregivers consistently reported higher caregiving time and greater adverse labor and productivity outcomes, including absenteeism, presenteeism, reduced working hours, job loss, and weekly hours of unpaid care, than male caregivers.

“Women consistently reported greater labor and productivity impacts than men.”

• Also stated in: § Differences in Labor and Productivity Outcomes by Sex · plain

  “Seven studies disaggregated outcomes by caregiver sex, with female caregivers consistently reporting higher caregiving time and greater adverse labor and productivity outcomes including absenteeism, presenteeism, reduced working hours, job loss, and weekly hours of unpaid care.20,[22][23][24][25][26][27]”

• cites [20] sourcePartly supported

  The regression results report larger relative earnings losses for women (5.9%) than men (3.4%), but similar employment reductions of about 2.4 percentage points. The Discussion also describes the gender difference as only slight. Our copy does not establish the claimed differences in caregiving time, absenteeism, presenteeism, job loss, or unpaid-care hours. (LLM, conf=0.88)

  Experimental — accuracy not yet measured
• cites [22] sourcePartly supported

  The Results and Discussion (page not provided) report a significant reduction in employment among wives of cancer survivors, but no significant employment effect among husbands. They do not establish that women consistently experienced greater impacts: other employment outcomes for wives were not significantly worse, and the study did not measure absenteeism, presenteeism, or unpaid caregiving time. (LLM, conf=0.88)

  Experimental — accuracy not yet measured
• cites [23] sourceNot checked — no full text of the source

May combine two claims.

Research on the economic burden of cancer caregiving remains limited and concentrated in high-income, Western countries.

“Despite increasing attention, research on the economic burden of cancer caregiving remains limited and concentrated in high-income, Western countries.7”

• cites [7] sourcePartly supported

  The ‘Effect of Cancer Treatments on Caregiver Work Productivity’ section reports that 16 of 62 reviewed studies evaluated caregiver productivity, supporting a limited evidence base for that aspect of caregiving costs. ‘Overall Study Characteristics’ lists countries for the review as a whole, including several outside the West, but does not establish that caregiver-specific economic-burden research was concentrated in high-income Western countries. The review is also limited to treatment-related work productivity rather than the full economic burden of caregiving; page numbers are unavailable in our copy. (LLM, conf=0.82)

  Experimental — accuracy not yet measured

May combine two claims.

Evidence in LMIC is sparse, and estimates from lower-income settings may understate severity because diagnoses come later, survival is lower, caregiving durations are shorter, and weak data systems preclude long-term follow-up.

“Evidence there is sparse, and estimates from lower-income settings may understate severity because diagnoses come later, survival is lower, caregiving durations are shorter, and weak data systems preclude long-term follow-up.29”

• cites [29] sourceSupported

Probably not a substantial claim: may not pass S3 (load-bearing).

All authors codeveloped a structured risk-of-bias and quality assessment based on the MetaQAT framework to evaluate relevance, reliability, applicability, and validity.

“Because included studies used diverse observational designs, all authors codeveloped a structured risk-of-bias and quality assessment based on the MetaQAT framework to evaluate relevance, reliability, applicability, and validity.13”

• cites [13] sourceSupported

Probably not a substantial claim: may not pass S3 (load-bearing).

The review followed PRISMA 2020 guidelines.

“We followed guidelines from the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (2020).10”

• cites [10] sourceSupported

May combine two claims.

The pooled estimate for change in employment status was -1.1% (95% CI, -4.8 to 2.5), indicating uncertainty whether caregiver job loss outweighs employment gain.

“and 1% exited employment (95% CI, -3 to 5).”

• Also stated in: § Change in Employment Status (job loss) · hedged

  “The over pooled estimate was -1.1% (95% CI, -4.8 to 2.5), indicating uncertainty whether caregiver job loss outweighs employment gain.”

May combine two claims.

Studies conducted in Europe estimate that weekly hours of care, reduced work hours, and rates of absenteeism are higher than those found in the Americas.

“Studies conducted in Europe estimate that weekly hours of care, reduced work hours, and rates of absenteeism are higher than those found in the Americas.”

May combine two claims.

Caregivers in the Americas demonstrate lower absenteeism and higher presenteeism than counterparts in other regions.

“Caregivers in the Americas demonstrate lower absenteeism and higher presenteeism than counterparts in other regions, possibly because of a lack of supportive labor laws and workplace policies for caregiving.”

May combine two claims.

Sample sizes were generally robust; excluding comparison groups, only six studies reported outcomes based on samples of fewer than 50 individuals.

“Sample sizes were generally robust; excluding comparison groups, only six studies reported outcomes based on samples of fewer than 50 individuals.”

May combine two claims.

Empirical methods to measure bias were infrequently applied, with the most common approach being comparison of survey respondents and nonrespondents.

“Empirical methods to measure bias were infrequently applied, with the most common approach being comparison of survey respondents and nonrespondents.”

May combine two claims.

Presenteeism and weekly hours of unpaid care reach their highest levels during palliative care.

“Presenteeism and weekly hours of unpaid care also reach their highest levels during palliative care.”

May combine two claims.

Basic sample demographics were reported by 95% of studies, although some patient surveys of unpaid care utilization did not report caregiver age or sex.

“Basic sample demographics were reported by 95% of studies, although some patient surveys of unpaid care utilization did not report caregiver age or sex.”

May combine two claims.

Absenteeism follows a similar trajectory to reduced work hours, but returns to peak levels during palliative care.

“Absenteeism follows a similar trajectory, but instead returns to peak levels during palliative care.”

May combine two claims.

Objective measures of caregiver burden, such as hours of care or task lists, were reported in 71% of studies, while subjective measures of caregiver burden, stress, or support were featured in 56%.

“Objective measures of caregiver burden, such as hours of care or task lists, were reported in 71% of studies, while subjective measures of caregiver burden, stress, or support were featured in 56%.”

May combine two claims.

High statistical heterogeneity was observed for most pooled outcomes, limiting comparability of results across cancer sites and global regions.

“High statistical heterogeneity was observed for most pooled outcomes, limiting comparability of results across cancer sites and global regions.”

May combine two claims.

Only care hours were reported across all four remaining regions, and no region other than the Americas provided measurements of every outcome.

“Only care hours were reported across all four remaining regions, and no region other than the Americas provided measurements of every outcome.”

May combine two claims.

Many studies described potential sources of sample and response bias, although 5 (12%) did not report such limitations when applicable.

“Many studies described potential sources of sample and response bias, although 5 (12%) did not report such limitations when applicable.”

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

All secondary data sources were assessed as authoritative and reliable.

“All secondary data sources were assessed as authoritative and reliable.”

May combine two claims.

Most employed caregivers remain in the workforce, but they exhibit increased absenteeism, reduced workplace productivity, and in some cases, decreased professional responsibilities.

“Although most employed caregivers remain in the workforce, they exhibit increased absenteeism, reduced workplace productivity, and in some cases, decreased professional responsibilities.”

Probably not a substantial claim: may not pass S3 (load-bearing).

Just over half (52.5%) of included studies reported cancer site-specific outcome measures.

“Just over half (52.5%) of included studies reported cancer site-specific outcome measures.”

May combine two claims.

Measurement tools, reference periods, and analytic approaches varied widely across studies, as do contextual factors like cultural norms, availability of formal care services, and labor market structures.

“Measurement tools, reference periods, and analytic approaches varied widely across studies, as do contextual factors like cultural norms, availability of formal care services, and labor market structures.”

May combine two claims.

Some site-specific estimates relied on single studies, limiting comparability because of heterogeneous study designs, samples, and measurement approaches.

“Some site-specific estimates relied on single studies, limiting comparability because of heterogeneous study designs, samples, and measurement approaches.”

May combine two claims.

Every study was determined to have applied appropriate statistical methods and reported effect estimates with associated measures of uncertainty.

“Every study was determined to have applied appropriate statistical methods and reported effect estimates with associated measures of uncertainty.”

May combine two claims.

Care hours and rates of professional role reduction in the Americas are comparable with the Western Pacific.

“At the same time, care hours and rates of professional role reduction in the Americas are comparable with the Western Pacific.”

May combine two claims.

Prospective methods were applied in 34% of studies, 22% used authoritative secondary data sources, and four-fifths of primary studies used validated instruments.

“Prospective methods were applied in 34% of studies, 22% used authoritative secondary data sources, and four-fifths of primary studies used validated instruments.”

May combine two claims.

The 59 articles included in this systematic review perform well on the abbreviated quality assessment, with the average study fulfilling 12.5 of the 15 criteria.

“The 59 articles included in this systematic review perform well on the abbreviated quality assessment, with the average study fulfilling 12.5 of the 15 criteria.”

May combine two claims.

Reduced working hours varied across cancer types, with pooled rates highest for lung cancer (23.0%; 95% CI, -7.7 to 53.8) and blood cancer (17.1%; 95% CI, -16.8 to 51.1) and lowest for breast cancer (7.6%; 95% CI, 1.9 to 13.3).

“Reduced working hours varied across cancer types, although subgroup estimates were imprecise because of small sample sizes.Pooled rates were the highest for lung cancer (23.0%[95% CI, -7.7 to 53.8]) and blood cancer (17.1% [95% CI, -16.8 to 51.1]) caregivers and the lowest for breast cancer caregivers (7.6% [95% CI, 1.9 to 13.3]).”

May combine two claims.

Only eight of the 59 included studies originate from outside of Europe and North America, with China, Nigeria, Türkiye, and Uganda being the only LMIC represented.

“Only eight of the 59 included studies originate from outside of Europe and North America, with China, Nigeria, T ¨ urkiye, and Uganda being the only LMIC represented.”

May combine two claims.

Evidence of small-study effects was identified for absenteeism (Egger test P < .001) and presenteeism (P 5 .0016), suggesting possible funnel-plot asymmetry for these outcomes.

“Evidence of smallstudy effects was identified for absenteeism (Egger test P < .001)and presenteeism (P 5 .0016),suggesting possible funnel-plot asymmetry for these outcomes.”

May combine two claims.

Most studies did not specify cancer type or report results for multiple cancer sites.

“Most studies did not specify cancer type or report results for multiple cancer sites.”

Probably not a substantial claim: may not pass S3 (load-bearing).

60% of new cancer cases occur in LMICs.

“As 60% of new cancer cases occur LMIC, there is a critical need for broader evidence that captures caregiver burden across diverse health systems, labor markets, and geographic contexts.9”

• cites [9]Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

Unpaid caregivers of people with cancer face substantial time- and labor-related burdens that may affect their financial stability and long-term wellbeing.

“Unpaid caregivers of people with cancer face substantial time-and laborrelated burdens that may affect their financial stability and long-term wellbeing.”

Probably not a substantial claim: may not pass S3 (load-bearing).

The International Labor Organization estimated in 2018 that women perform 76.2% of unpaid care work worldwide.

“The International Labor Organization estimated in 2018 that women perform 76.2% of unpaid care work worldwide, which can restrict their access to economic opportunities and reinforce existing inequities.4”

• cites [4]Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing).

The study protocol was not prospectively registered in any database.

“The study protocol was not prospectively registered in any database.”

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

Unpaid care hours in the United States are highest for lung cancer, ovarian cancer, and non-Hodgkin lymphoma caregivers, and lowest for breast cancer caregivers.

“Yabroff and Kim 2 reported that unpaid care hours in the United States are highest for lung cancer, ovarian cancer, and non-Hodgkin lymphoma caregivers, and lowest for breast cancer caregivers.”

• cites Yabroff and Kim 2Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

Two authors independently screened abstracts and conducted full-text review.

“Two authors (G.A., L.M.) independently screened abstracts and subsequently conducted full-text review of 106 articles, including seven systematic reviews.”

Classified as probably not a substantial claim.

To avoid overweighting these studies, we applied a consistent inverse-variance collapsing procedure to derive a single study-level estimate before contributing results to the meta-analysis.

“To avoid overweighting these studies, we applied a consistent inverse-variance collapsing procedure to derive a single study-level estimate before contributing results to the meta-analysis.”

Probably not a substantial claim: may not pass S3 (load-bearing).

Publication bias and small-study effects were assessed for outcomes with at least 10 independent study-level effect estimates.

“Publication bias and small-study effects were assessed for outcomes with at least 10 independent study-level effect estimates.”

Probably not a substantial claim: may not pass S2 (checkable).

Our findings should be interpreted cautiously in LMIC contexts where caregiving structures, labor markets, and social protections differ from the high-income settings of most studies.

“Our findings should be interpreted cautiously in LMIC contexts where caregiving structures, labor markets, and social protections differ from the high-income settings of most studies.”

May combine two claims.

Greater productivity loss is reported among caregivers supporting patients with advanced cancer, and absenteeism and presenteeism were correlated with care hours.

“Mazanec et al 34 reported greater productivity loss among caregivers supporting patients with advanced cancer and demonstrated that absenteeism and presenteeism were correlated with care hours.”

• cites Mazanec et al 34Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

Standardized 35-hour workweeks and 250-day work years may not be representative of labor customs in all regions.

“Furthermore, standardized 35-hour workweeks and 250-day work years may not be representative of labor customs in all regions.”

May combine two claims.

US caregivers for breast cancer reduce fewer working hours than caregivers for lung cancer, but exhibit greater presenteeism.

“Finally, Chiu et al 28 found that US caregivers for breast cancer reduce fewer working hours than caregivers for lung cancer, but exhibit greater presenteeism.”

• cites Chiu et al 28Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing).

Higher presenteeism is found among working caregivers with white-collar jobs and college degrees.

“For example, Keita Fakeye et al 33 find higher presenteeism among working caregivers with white-collar jobs and college degrees.”

• cites Keita Fakeye et al 33Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing).

Prespecified subgroup analyses were conducted when sufficient data were available.

“Prespecified subgroup analyses were conducted when sufficient data were available.”

Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

Gendered social expectations and cultural norms surrounding work, family, and caregiving likely contribute to the observed sex-based differences.

“Gendered social expectations and cultural norms surrounding work, family, and caregiving likely contribute to the observed sex-based differences.”

May combine two claims.

The pooled estimates consistently illustrate more severe labor consequences for women compared with men, but these results should be interpreted cautiously.

“Although the pooled estimates consistently illustrate more severe labor consequences for women compared with men, these results should be interpreted cautiously because of”

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

Findings of gender-based disparities in labor and productivity outcomes are consistent with evidence from the International Labor Organization and other research groups.

“Findings of gender-based disparities in labor and productivity outcomes are consistent with evidence from the International Labor Organization and other research groups.”

Probably not a substantial claim: may not pass S3 (load-bearing).

It is possible that the aggregated results of this meta-analysis reflect biases within its component studies.

“Finally, it is possible that the aggregated results of this meta-analysis reflect biases within its component studies.”

May combine two claims.

Female caregivers in the United States have higher absenteeism and presenteeism rates than their male counterparts, although men in the study sample contributed marginally higher care hours.

“Finally, Fong et al 24 conclude that female caregivers in the United States boast higher absenteeism and presenteeism rates than their male counterparts, although they also find marginally higher care hours contributed by men in their study sample.”

• cites Fong et al 24Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

Probably not a substantial claim: may not pass S3 (load-bearing).

Comparable registries of caregivers are rare.

“Although research on cancer patients can identify and anonymize research subjects in databases of electronic medical records or insurance claims, comparable registries of caregivers are rare.”

Probably not a substantial claim: may not pass S3 (load-bearing).

Funnel plots were constructed to assess publication bias and small-study effects for outcomes with at least 10 independent study-level estimates.

“Funnel plots, included in the Data Supplement, were also constructed to assess publication bias and small-study effects for outcomes with at least 10 independent study-level estimates.”

May combine two claims.

Narrow CIs for European and American outcome estimates reflect the strong depth of research in these geographies, while estimates from other regions represent comparatively fewer studies and greater uncertainty.

“Narrow CIs for European and American outcome estimates reflect the strong depth of research in these geographies, while estimates from other regions represent comparatively fewer studies and greater uncertainty.”

• AssumptionRests on an assumption: Pooled findings from high-income Western studies may not hold true in lower-income and non-Western settings.

May combine two claims.

Caregiving husbands in the United States make smaller reductions in their work hours, and provide fewer care hours, than caregiving wives.

“Hollenbeak et al 22 find that caregiving husbands in the United States make smaller reductions in their work hours, and provide fewer care hours, than caregiving wives.”

• cites Hollenbeak et al 22Not matched

  Couldn’t be matched to a paper in Crossref, so it can’t be checked.

May combine two claims.

Comprehensive regional comparisons are precluded by the evidence base's skew toward high-income, Western countries, with evidence gaps persisting for certain outcome measures across geographic contexts.

“Comprehensive regional comparisons are precluded by the evidence base's skew toward high-income, Western countries, with evidence gaps persisting for certain outcome measures across geographic contexts.”

• AssumptionRests on an assumption: Pooled findings from high-income Western studies may not hold true in lower-income and non-Western settings.

May combine two claims.

Although this method ensured comparability across studies and prevented disproportionate influence from any single source, it may mask important within-study variation across phases of care or patient subgroups.

“Although this method ensured comparability across studies and prevented disproportionate influence from any single source, it may mask important within-study variation across phases of care or patient subgroups.”

Classified as probably not a substantial claim.

Random-effects models were chosen in advance to account for heterogeneity in study designs, populations, and measurement approaches.

“Random-effects models were chosen in advance to account for heterogeneity in study designs, populations, and measurement approaches”

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

Recruitment through clinics or patients overrepresents highly engaged caregivers, while recruitment through support groups emphasizes high-burden and care-seeking individuals, and online surveys lean toward younger and higher-income demographics.

“Recruitment through clinics or patients overrepresents highly engaged caregivers, while recruitment through support groups emphasizes high-burden and care-seeking individuals, and online surveys lean toward younger and higher-income demographics.”

May combine two claims.

The associated productivity loss represents a broader social cost and contributes meaningfully to the overall socioeconomic burden of cancer.

“Although the burden of caregiving is felt most acutely at the individual and household levels, this review suggests that the associated productivity loss represents a broader social cost and contributes meaningfully to the overall socioeconomic burden of cancer.”

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

Cancer treatment strains patients financially, and this burden compounds when a caregiving family member must reduce or forgo employment.

“Cancer treatment strains patients financially, and this burden compounds when a caregiving family member must reduce or forgo employment.”

Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

As life expectancy and the burden of noncommunicable diseases rise, unpaid caregiving becomes increasingly integral to health care systems worldwide.

“In conclusion, as life expectancy and the burden of noncommunicable diseases rise, unpaid caregiving becomes increasingly integral to health care systems worldwide.”

May combine two claims.

These impacts are unevenly distributed, with women providing more unpaid care and experiencing greater economic and professional consequences than men.

“These impacts are unevenly distributed, with women providing more unpaid care and experiencing greater economic and professional consequences than men.”