Caregiving Intensity and Mortality in Older Women, Accounting for Time-Varying and Lagged Caregiver Status: The Caregiver-Study of Osteoporotic Fractures Study

Caregiving and all-cause mortality in postmenopausal women: Findings from the Women's Health Initiative

BACKGROUND

Caregiving is commonly undertaken by older women. Research is mixed, however, about the impact of prolonged caregiving on their health, well-being, and mortality risk. Using a prospective study design, we examined the association of caregiving with mortality in a cohort of older women.

METHODS

Participants were 158,987 postmenopausal women aged 50-79 years at enrollment into the Women's Health Initiative (WHI) who provided information on current caregiving status and caregiving frequency at baseline (1993-1998) and follow-up (2004-2005). Mortality was ascertained from baseline through March of 2019. Cox regression with caregiving status defined as a time-varying exposure was used to estimate hazard ratios (HR) and 95% confidence intervals (CI) for mortality, adjusting for sociodemographic factors, smoking, and history of diabetes, hypertension, cardiovascular disease (CVD), and cancer. Stratified analyses explored whether age, race-ethnicity, depressive symptoms, frequency of caregiving, optimism, and living status modified the association between caregiver status and mortality.

RESULTS

At baseline, 40.7% of women (mean age 63.3 years) self-identified as caregivers. During a mean 17.5-year follow-up, all-cause mortality (50,526 deaths) was 9% lower (multivariable-adjusted HR = 0.91, 95% CI: 0.89-0.93) in caregivers compared to non-caregivers. The inverse association between caregiving and all-cause mortality did not differ according to caregiving frequency or when stratified by age, race-ethnicity, depressive symptoms, optimism, or living status (interaction p > 0.05, all). Caregiving was inversely associated with CVD and cancer mortality.

CONCLUSION

Among postmenopausal women residing across the United States, caregiving was associated with lower mortality. Studies detailing the type and amount of caregiving are needed to further determine its impact on older women.

The role of caregiving in cognitive function and change: The REGARDS study

Chronic stress is associated with negative health outcomes, including poorer cognition. Some studies found stress from caregiving associated with worse cognitive functioning; however, findings are mixed. The present study examined the relationship between caregiving, caregiving strain, and cognitive functioning. We identified participants in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study who were family caregivers at baseline assessment and used propensity matching on 14 sociodemographic and health variables to identify matched noncaregivers for comparison. Data included up to 14 years of repeated assessments of global cognitive functioning, learning and memory, and executive functioning. Our results showed that when compared to noncaregivers, caregivers had better baseline scores on global cognitive functioning and word list learning (WLL). Among caregivers, a lot of strain was associated with better WLL and delayed word recall in the unadjusted model only. Caregivers with a lot of strain had higher depressive symptoms but not significantly higher high-sensitivity c-reactive protein (hsCRP) at baseline compared to caregivers with no or some strain after covariate adjustment. Although caregiving can be highly stressful, we found caregiving status and caregiving strain were not associated with cognitive decline. More methodologically rigorous studies are needed, and conclusions that caregiving has negative effects on cognition should be viewed with caution. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Types of Caregiving Experience and Their Association With Caregiver Depressive Symptoms and Quality of Life

ObjectiveThis study examines distinct types of caregiving experience, each formed by varied combinations of caregiving burden and benefits, and their association with caregiver depressive symptoms and quality of life. Methods: We apply latent profile analysis and multivariable regression to data on 278 caregivers participating in the Caregiving Transitions among Family Caregivers of Elderly Singaporeans (TraCE) study in 2019-2020. Results: We identify four caregiving experience types: (1) balanced (low burden and moderate benefits, 40% of caregivers), (2) satisfied (low burden and high benefits, 33%), (3) intensive (high burden and high benefits, 17%), and (4) dissatisfied (moderate burden and low benefits, 10%). Caregivers with dissatisfied and intensive caregiving experience tend to report higher depressive symptoms and lower quality of life compared to those with satisfied caregiving experience. Discussion: A person-centered approach helps capture the heterogeneity in caregiving experience. Policymakers should develop tailored interventions by caregiving experience types for promoting caregiver well-being.

Differences in Caregiving Intensity Among Distinct Sociodemographic Subgroups of Informal Caregivers: Joint Effects of Race/Ethnicity, Gender, and Employment

More than 40 million informal caregivers in the United States provide essential care to older adults. Recent research has identified substantial differences in caregiving intensity by gender, race/ethnicity, and employment status. Using intersectionality theory, the current study extends the existing literature by exploring the relationship between caregiving intensity and the unique experiences of individuals with different intersections of gender, ethnicity, and employment. We used generalized linear models to estimate multivariate associations between caregiving intensity assessed by three different measures (hours of caregiving per month and number of activities of daily living and instrumental activities of daily living [IADLs] assisted with) and the three sociodemographic factors of interest (race/ethnicity, gender, and employment status). Unemployed White males provided, on average, 77 fewer hours per month of care (p < 0.001) and assisted with 1.9 fewer IADLs (p = 0.004) than unemployed Black males. Employed White females provided 42.6 fewer hours per month of care (p = 0.002) than employed Black females and 49.2 fewer hours per month (p = 0.036) than employed females of other races. Study findings suggest that examining racial/ethnic or gender differences in isolation does not provide a true picture of differences in caregiving intensity. There is a critical need to understand how the intersections of race/ethnicity, gender, employment, and other sociodemographic factors shape the experiences of caregiver subgroups. [Journal of Gerontological Nursing, 47(7), 23-32.].

Take a sad song and make it better: Spousal activity limitations, caregiving, and depressive symptoms among couples

OBJECTIVES

Framed around key concepts of the life course perspective, we examined the linkages between spousal activity limitations, caregiving transitions, and depression among married couples. The key study objectives were 1) to demonstrate how the caregiving-depression link widely reported in earlier research may have been over-stated, and 2) to investigate whether caregiving yields mental health benefits by weakening the link between spousal activity limitations and depressive symptoms.

METHODS

We used longitudinal data from the Health and Retirement Study (2004-2016) to examine a national sample of coupled individuals (6,475 couples; 57,844 person-wave observations). A series of longitudinal actor-partner interdependence models were used to estimate within-person associations between spousal activity limitations, caregiving transitions, and depressive symptoms among coupled individuals.

RESULTS

Findings demonstrated that spousal activity limitations function as a confounder for the association between caregiving transitions and depressive symptoms. Results further provided evidence that transitioning into a caregiving role in the context of spousal activity limitations alleviated symptoms of depression for the caregiver.

CONCLUSION

The findings provide an explanation for the extended longevity benefit reaped by caregivers increasingly reported in recent population studies. Implications for policy, practice, and future research are discussed.

The transition to family caregiving and its effect on biomarkers of inflammation

Chronic stress has been widely proposed to increase systemic inflammation, a pathway that may link stress with a heightened risk for many diseases. The chronic stress-inflammation relationship has been challenging to study in humans, however, and family caregiving has been identified as one type of stressful situation that might lead to increased inflammation. Previous studies of caregiving and inflammation have generally used small convenience samples, compared caregivers with poorly characterized control participants, and assessed inflammation only after caregivers provided care for extended periods of time. In the current project, changes over a 9-y period were examined on six circulating biomarkers of inflammation for 480 participants from a large population-based study. All participants reported no involvement in caregiving prior to the first biomarker assessment, and 239 participants then took on extensive and prolonged family caregiving responsibilities at some point prior to the second biomarker assessment. Incident caregivers were individually matched on multiple demographic and health history variables with participants who reported no caregiving responsibilities. Of the six biomarkers examined, only tumor necrosis factor alpha receptor 1 showed a significantly greater increase in caregivers compared with controls. This effect was small (d = 0.14), and no effects were found for a subset of 45 caregivers who were living with a spouse with dementia. These results are consistent with recent meta-analytic findings and challenge the widespread belief that caregiving is a substantial risk factor for increased inflammation. Future research is warranted on factors that may account for stress resilience in family caregivers.

Association between Role Overload and Sleep Disturbance among Dementia Caregivers: The Impact of Social Support and Social Engagement

Objective: To explore the association between role overload (RO) and sleep maintenance insomnia (SMI), and the moderation effects of social support and social engagement (SE). Methods: We report a cross-sectional study using data drawn from the 2015 National Health and Aging Trends Study and National Study of Caregiving. We used multiple regression and controlled for demographics and potential confounders. Results: Nearly 45% of caregivers reported suffering from SMI during "some" and "more" nights within the past month with one half reporting "almost" or "every" night. RO was found positively associated with the risk of SMI. Instrumental support moderated the effect of RO on SMI overall, although moderation was limited to a subsample of adult children caregivers. Discussion: The sleep quality of dementia caregivers may be affected by RO, particularly for adult children caregivers. Increasing instrumental support may be beneficial to caregiver's sleep quality.