Older Adult Falls in the Community: Does Unsafe Home Environment Have a Risk Role Through the Mediating Effect of Functional Limitations?

BACKGROUND AND OBJECTIVES

Fall incidents from unsafe home environments are frequent in older-adult homes but the literature is ambiguous whether it is the presence/absence, or the interplay of such conditions and physical functioning that is of salience. We therefore estimated whether unsafe home environment is adversely associated with subsequent falls among older adults and what proportion of this association was mediated through limitations in daily and instrumental activities of daily living (ADL/IADL).

RESEARCH DESIGN AND METHODS

Using a nationally representative sample of community-dwelling Medicare beneficiaries (≥65 years) in the 2018-2019 National Health and Aging Trends Study (n = 2,599), we conducted bivariate and multivariable analyses. We examined baseline conditions of home disorders, unsafe bathroom settings, unsafe house/building features, and house disrepairs in 2018 and their relation with subsequent falls in 2019, after controlling for covariates. To assess whether ADL/IADL limitations mediated this relationship, we employed the Karlson-Holm-Breen methodology.

RESULTS

In 2019, the self-reported prevalence of falls among older adults was estimated at 34.68%. Although baseline home disorders had both a direct (adjusted odds ratio [aOR]: 1.14, 95% confidence interval [CI]:1.03,1.26) and an indirect effect through limitations in ADL and IADL (aOR: 1.01; 95% CI: 1.00,1.03), the relation between unsafe bathroom settings and subsequent falls was unclear. Unsafe house/building features and house disrepairs were not statistically significantly related either directly or indirectly with subsequent falls.

DISCUSSION AND IMPLICATIONS

Addressing home disorders through policy and housing assessments to highlight home environmental safety would be essential to address falls among older adults.

Analysis of agreement between measures of subjective cognitive impairment and probable dementia in the National Health and Aging Trends Study

BACKGROUND

Subjective cognitive impairment (SCI) measures in population-based surveys offer potential for dementia surveillance, yet their validation against established dementia measures is lacking.

METHODS

We assessed agreement between SCI and a validated probable dementia algorithm in a random one-third sample (n = 1936) of participants in the 2012 National Health and Aging Trends Study (NHATS).

RESULTS

SCI was more prevalent than probable dementia (12.2% vs 8.4%). Agreement between measures was 90.0% and of substantial strength. Misclassification rates were higher among older and less-educated subgroups due to higher prevalence of false-positive misclassification but did not vary by sex or race and ethnicity.

DISCUSSION

SCI sensitivity (63.4%) and specificity (92.5%) against dementia were comparable with similar metrics for the NHATS probable dementia measure against the "gold-standard" Aging, Demographics, and Memory Study-based dementia criteria, implying that population-based surveys may afford cost-effective opportunities for dementia surveillance to assess risk and inform policy.

HIGHLIGHTS

The prevalence of subjective cognitive impairment (SCI) is generally higher than that of a validated measure of probable dementia, particularly within the youngest age group, females, Whites, and persons with a college or higher degree. Percent agreement between SCI and a validated measure of probable dementia was 90.0% and of substantial strength (prevalence- and bias-adjusted kappa, 0.80). Agreement rates were higher in older and less-educated subgroups, driven by the higher prevalence of false-positive disagreement, but did not vary significantly by sex or race and ethnicity. SCI's overall sensitivity and specificity were 63.4% and 92.5%, respectively, against a validated measure of probable dementia, suggesting utility as a low-cost option for dementia surveillance. Heterogeneity in agreement quality across subpopulations warrants caution in its use for subgroup analyses.

Social Contact, Social Participation, and Emotional Well-Being Among Older Adults During the COVID-19 Pandemic: The Roles of Giving and Receiving Social Support

This study examined whether social contact, social participation, and social support during the COVID-19 pandemic were associated with depression and anxiety. Data were taken from the 2020 COVID-19 Supplement of the National Health and Aging Trends Study (N = 2,778). Depression and anxiety were regressed on social contact frequency, social participation, and social support. Path analyses were also performed. The results showed that in-person contact was related to lower levels of depression, while in-person contact and attending religious services were related to lower levels of anxiety. Giving and receiving support were associated with higher levels of depression and anxiety. Giving support mediated the link between virtual contact, volunteering, and depression, while receiving support mediated the link between virtual contact and depression. Receiving and giving support mediated the association between virtual social contact, volunteering, and anxiety. During the pandemic, being socially connected provided some benefits in terms of emotional well-being, but in some cases being socially connected did not provide salubrious effects.

Association between vision impairment and increased prevalence of falls in older US adults

BACKGROUND

Vision impairment (VI) is associated with falls in older adults. However, past studies have relied on geographically constrained samples with limited generalizability or self-reports of visual difficulty. To date, there have not been nationally representative studies on the association of objective measures of visual function and falls outcomes.

METHODS

We used cross-sectional data from Round 11 of National Health and Aging Trends Study (NHATS), a nationally representative panel study of age-eligible Medicare beneficiaries (N = 2951). We performed Poisson regression to calculate the prevalence and prevalence ratio (PR) of >1 fall in the past year, any fall in the past month, fear of falling (FoF), and activity limitation due to FoF as a function of distance visual acuity, near visual acuity, and contrast sensitivity. Models were adjusted for demographic and health covariates and were weighted to make nationally representative parameter estimates.

RESULTS

The weighted proportion of participants with VI was 27.6% (95% CI, 25.4%-29.9%). Individuals with any VI had a higher prevalence of falls compared with those without VI (18.5% vs. 14.1%, PR = 1.25, 95% CI 1.02-1.53). Specifically, contrast sensitivity impairment was associated with a higher prevalence of recurrent falls (20.8% vs. 14.7%; PR = 1.30, 95% CI 1.01-1.67) and recent falls (17.1% vs. 9.9%; PR = 1.40, 95% CI 1.01-1.94). This relationship existed even independent of near and distance visual acuity. Distance and near visual acuity were not significantly associated with falls. Having any VI was also associated with a higher prevalence of FoF (38.4% vs. 30.5%, PR = 1.17, 95% CI 1.02-1.34).

CONCLUSION

The prevalence of falls is associated with poor contrast sensitivity but not with near or distance visual acuity. Findings suggest greater collaboration between geriatricians and eye care providers may be warranted to assess and address fall risk in older adults with VI.

Food sufficiency status and sleep outcomes in older adults: the National Health and Aging Trends Study (NHATS)

BACKGROUND

Studies investigating the relationship between food insecurity and sleep among older populations are limited. This study aimed to cross-sectionally examine the associations between food sufficiency status and sleep outcomes in a nationally representative sample of older adults.

METHODS

Our study included 1,665 older adults (≥ 65 years), using data from the 2013 and 2014 National Health and Aging Trends Study (NHATS). Food insufficiency was determined via participants' experience and utilization of food assistance programs (FAP). Sleep outcomes, including nighttime and total sleep hours, sleep latency, and sleep quality, were derived from self-reported data. Multivariable linear regression and logistic regression models were used to estimate the associations between food sufficiency status and sleep outcomes.

RESULTS

In 2013-2014, 86.1% of older adults were classified as food sufficient without FAP, 9.85% as food sufficient with FAP, and 4.08% as food insufficient. Adjusting for sociodemographic characteristics, food sufficient older adults with FAP reported more total sleep hours (𝛽 = 0.31, 95% CI: -0.02, 0.64) than those participants who are food sufficient without FAP. Further adjusting for health factors, food sufficient participants with FAP had more nighttime sleep hours and greater total sleep hours compared to those participants food sufficient without FAP. Compared to those deemed as food sufficient without FAP, food sufficient participants with FAP had lower odds of having longer sleep latency (OR = 0.50, 95% CI: 0.28, 0.89), after further adjusting for physical function performance.

CONCLUSIONS

Among older adults, food sufficiency with FAP is associated with greater total sleep hours, greater nighttime sleep hours, and lower odds of longer sleep latency. Our findings may help inform nutrition food assistance programs targeting older populations.

Poor sleep health predicts the onset of a fear of falling among community-dwelling older adults

INTRODUCTION

A greater fear of falling predicts disability, falls, and mortality among older adults. Although poor sleep has been identified as a relevant risk factor for fear of falling among older adults, evidence is primarily shown in cross-sectional studies using isolated sleep characteristics. Less is known about whether prior fall experiences change the sleep health-fear of falling link among older adults. We investigated the longitudinal relationship between sleep health and the incidence of fear of falling among community-dwelling older adults and how the association differed between those with or without prior fall experiences.

METHODS

Data were from individuals who completed the sleep module in the National Health and Aging Trends Study (2013-2014; n = 686). Fear of falling was assessed with a single item. Multidimensional sleep health was measured with self-reported sleep items based on the SATED model (ie, sleep satisfaction, daytime alertness, timing, efficiency, and duration). Covariates included sociodemographics, assistive device usage, health, risky behavior, and sleep medications. Multiple logistic regression was used to analyze the data.

RESULTS

Poor sleep health was associated with the onset of fear of falling at 1-year follow-up (odds ratios=1.20, 95% confidence interval=1.02-1.41). Moreover, poor sleep health increased the odds of having fear of falling among individuals without prior falls experiences and elevated the already heightened risks of developing fear of falling among those who fell at baseline.

CONCLUSIONS

Given that fear of falling and experiencing a fall each increase the risk of the other occurring in the future, improving sleep health may prevent older adults from stepping into the vicious cycle of fear of falling and falls.

Frailty as a predictor of mortality: a comparative cohort study of older adults in Costa Rica and the United States

BACKGROUND

Frailty is a common condition among older adults that results from aging-related declines in multiple systems. Frailty increases older adults' vulnerability to negative health outcomes, including loss of mobility, falls, hospitalizations, and mortality. The aim of this study is to examine the association between frailty and mortality in older adults from Costa Rica and the United States.

METHODS

This prospective cohort study uses secondary nationally-representative data of community-dwelling older adults from the Costa Rican Longevity and Healthy Aging Study (CRELES, n = 1,790) and the National Health & Aging Trends Study (NHATS, n = 6,680). Frailty status was assessed using Physical Frailty Phenotype, which includes the following five criteria: shrinking, exhaustion, low physical activity, muscle weakness, and slow gait. We used Cox proportional hazard models to examine the association between frailty and all-cause mortality, including sociodemographic characteristics and health behaviors as covariates in the models. Mortality follow-up time was right censored at 8 years from the date at baseline interview.

RESULTS

The death hazard for frail compared to non-frail older adults was three-fold in Costa Rica (HR = 3.14, 95% CI: 2.13-4.62) and four-fold in the White US (HR = 4.02, 95% CI: 3.04-5.32). Older age, being male, and smoking increased mortality risk in both countries. High education was a protective factor in the US, whereas being married/in union was a protective factor in Costa Rica. In the US, White older adults had a lower risk of death compared to all other races and ethnicities.

CONCLUSIONS

Results indicate that frailty can have a differential impact on mortality depending on the country. Access to universal health care across the life course in Costa Rica and higher levels of stress and social isolation in the US may explain differences observed in end-of-life trajectories among frail older adults.

Gender difference in the effects of chronic diseases on daily physical activity patterns in older adults: analysis of objectively measured physical activity in NHATS 2021

PURPOSE

Many chronic diseases have detrimental impact on the physical activity (PA) patterns of older adults. Often such diseases have different degrees of severity in males and females. Quantifying this gender difference would not only enhance our understanding of diseases but would also help design individual-specific PA interventions, thereby improving health outcomes for both genders.

METHODS

PA data for 747 participants from round 11 (2021) of the National Health and Aging Trends Study were analyzed. Multilevel functional regression models were used to study gender difference in the effects of chronic diseases on daily PA patterns while adjusting for confounders.

RESULTS

Females with dementia (or Alzheimer's disease), hypertension, heart and lung disease had lower PA at different times of day compared to females without these diseases, whereas males with and without these diseases had comparable daily PA. Males with diabetes had higher midnight PA and lower noon PA compared to males without diabetes, while females' PA with and without diabetes were similar.

CONCLUSIONS

Our analysis demonstrates that although for most diseases, the daily PA patterns of individuals with the disease are negatively altered compared to healthy individuals, the extent of decline varies by gender and time of day. Designing personalized physical activity interventions considering gender and diurnal PA pattern can potentially improve quality of life across both genders.

Association Between Pain and Fall Worry Among Community-Dwelling Older People With Cognitive Impairment in the United States

Background and Objectives

Previous studies have found that pain is associated with fall worry among community-dwelling older people. However, both pain and fall worry are poorly understood and underaddressed among community-dwelling older people with cognitive impairment (CI). It is essential to examine the association between pain and fall worry, and how sociodemographic and health characteristics may shape fall worry among this subgroup.

Research Design and Methods

We used data from the 2015 National Health and Aging Trends Study (analytic sample: n = 1150 community-dwelling older people with CI; were self-interviewed; mean age: 81; age range: 65-107). The number of pain sites in the prior month was assessed by presenting a card listing common pain sites (eg, back, knees). Two questions assessed past-month fall worry, "did you worry about falling down" and "did this worry ever limit your activities." Following descriptive statistics, we fit multinomial logistic regression models to examine the associations between different pain characteristics (number of sites, severity, location) and non-activity-limiting and activity-limiting fall worry.

Results

Non-activity-limiting fall worry was endorsed by 21.1% and activity-limiting fall worry by 13.6% of community-dwelling older people with CI. After adjusting for sociodemographic characteristics and fall-worry-related covariates, multinomial logistic regression analysis found that a greater number of pain sites (relative risk ratio [RRR] = 1.22, 95% Confidence Interval [95% CI] = 1.12-1.33, p <.001) and severe pain (RRR = 2.05, 95% CI = 1.12-3.75, p = .020) was associated with activity-limiting fall worry. Both lower body (knee, foot, and leg) and upper body (hand, wrist, shoulder, neck, and stomach) pain were found to be associated with a high risk of activity-limiting fall worry.

Discussion and Implications

These findings suggest pain and fall worry are common among community-dwelling older people with CI and can be elicited directly from those who are communicative. Fall prevention for this population should prioritize pain management to mitigate activity-limiting fall worry because activity limitation increases the risk of falls.

Online health information seeking and the association with anxiety among older adults

Introduction

The Internet supplies users with endless access to a wealth of information and is generally the first source searched by U.S. adults (18 years and older) when seeking health information. Age and anxiety are associated with online health information seeking (OHIS). Older adults (65 years and older) are increasing their OHIS. Importantly, OHIS can potentially lead to improved health outcomes for older adults. The relationship between OHIS and anxiety is less clear. Studies report those with more symptoms of anxiety are more likely to be OHIS, while other studies find the reverse pattern or no association. Generalized anxiety disorder affects up to 11% of older adults and is oftentimes unrecognized and untreated.

Methods

To address the mixed findings in the literature, we analyzed six waves (2015-2020) of data from the National Health and Aging Trends Study to assess the causal relationship between anxiety and OHIS using a Random Intercept Cross-lagged Panel Model framework.

Results

We found that while anxiety symptoms lead to OHIS in the next wave, OHIS was not associated with anxiety symptoms in the next wave.

Discussion

This suggests that for this sample of older adults, OHIS does not reduce or exacerbate older adults' symptoms of anxiety.

Correlates of caregiver well-being: The National Study of Caregivers

Background

The literature demonstrates an association between aspects of caregiving and support with caregiver burden and differences by race. Our objective was to examine correlates of caregiver wellbeing, and if the effect is moderated by race.

Methods

The National Study of Caregiving (NSOC) is a survey of unpaid and familial caregivers affiliated with participants in the National Health and Aging Trends Study, a nationally representative survey of Medicare beneficiaries. A total of 899 participants were examined cross-sectionally with logistic and multinomial logistic regression models to obtain adjusted odds ratios (aOR) and 95% confidence intervals (CI) for NSOC Round 3 (2017), stratified by race, to determine the association between aspects of caregiving and support variables with the two outcomes, three-level caregiving gains, and response to the statement "life has meaning and purpose."

Results

Among black caregivers with no family or friends to help, there were lower gains compared to very high gains (aOR: 2.82, 95% CI: 1.18, 6.77). Black and white caregivers who endorsed lower ratings regarding being appreciated by the care recipient had lower gains for "life has meaning and purpose" (aOR: 2.46, 95% CI: 1.00, 6.02; aOR: 1.65, 95% CI: 1.06, 2.56). Black caregivers with lower ratings regarding being appreciated had lower gains compared to very high gains (aOR: 5.04, 95% CI: 1.48, 17.17). White caregivers endorsing lower ratings to the same question had lower gains compared to very high gains (aOR: 3.27, 95% CI: 1.77, 6.04), and those with more help had lower gains (aOR: 0.81, 95% CI: 0.70, 0.93).

Conclusion

The relationship between various correlates and positive aspects of caregiving is moderated by black and white races. Further study on the impact of aspects of caregiving and support networks for caregivers may shed light on factors contributing to racial differences and areas for intervention.

Pre-pandemic factors associated with delayed health care among US older adults during the COVID-19 pandemic

Background

During the first year of the COVID-19 pandemic, more than one-third of US older adults (aged 65 years and older) reported delaying medical care. Delayed health care may exacerbate short- and long-term health changes in older adults. Older adults more likely to delay health care may benefit from targeted follow-up to return these individuals to the health care system.

Objective

The aim of this study was to describe pre-pandemic sociodemographic, psychological, cognitive, and medical factors associated with delayed health care among US older adults during the COVID-19 pandemic.

Design

We conducted a secondary analysis of 2905 participants from the National Health and Aging Trends Study (NHATS), a nationally representative, prospective cohort of US older adult Medicare beneficiaries.

Methods

Pre-pandemic factors were reported at the Round 9 interview (2019). Delayed health care, including medical (e.g. usual doctor) and supplementary (e.g. dental) care, was reported on the COVID-19 questionnaire (2020). We calculated adjusted odds ratios using weighted logistic regression, accounting for the NHATS sampling design.

Results

Overall, 40% of participants reported delayed care. After adjustment, female participants and those reporting fair (vs good) health were consistently more likely to delay health care while persons with lower income or excellent health were less likely to delay care. Other associations varied by care type.

Conclusion

Women and those with higher income or fair health before the COVID-19 pandemic were more likely to delay care during the pandemic. Our results may inform targeted outreach to older adults who delayed care during the COVID-19 pandemic, or other disruptions to the health care system, to return these individuals to care and promote better management of their health needs.

Food Insufficiency, Supplemental Nutrition Assistance Program (SNAP) Status, and 9-Year Trajectory of Cognitive Function in Older Adults: The Longitudinal National Health and Aging Trends Study, 2012-2020

BACKGROUND

Despite findings from cross-sectional studies, how food insecurity experience/Supplemental Nutrition Assistance Program (SNAP) status relates to cognitive decline over time has not been fully understood.

OBJECTIVES

We aimed to investigate the longitudinal associations between food insecurity/SNAP status and cognitive function in older adults (≥65 y).

METHODS

Longitudinal data from the National Health and Aging Trends Study 2012-2020 were analyzed (n = 4578, median follow-up years = 5 y). Participants reported food insecurity experience (5-item) and were classified as food sufficient (FS, no affirmative answer) and food insufficient (FI, any affirmative answer). The SNAP status was defined as SNAP participants, SNAP eligible nonparticipants (≤200% Federal Poverty Line, FPL), and SNAP ineligible nonparticipants (>200% FPL). Cognitive function was measured via validated tests in 3 domains, and the standardized domain-specific and combined cognitive function z-scores were calculated. Mixed-effect models with a random intercept were used to study how FI or SNAP status was associated with combined and domain-specific cognitive z-scores over time, adjusting for static and time-varying covariates.

RESULTS

At baseline, 96.3% of the participants were FS and 3.7% were FI. In a subsample (n = 2832), 10.8% were SNAP participants, 30.7% were SNAP eligible nonparticipants, and 58.6% were SNAP ineligible nonparticipants. Compared with the FS group in the adjusted model (FI vs. FS), FI was associated with faster decline in the combined cognitive function scores [-0.043 (-0.055, -0.032) vs. -0.033 (-0.035, -0.031) z-scores per year, P-interaction = 0.064]. Cognitive decline rates (z-scores per year) in the combined score were similar in SNAP participants (β = -0.030; 95% CI: -0.038, -0.022) and SNAP ineligible nonparticipants (β = -0.028; 95% CI: -0.032, -0.024), both of which were slower than the rate in SNAP eligible nonparticipants (β = -0.043; 95% CI: -0.048, -0.038; P-interaction < 0.0001).

CONCLUSIONS

Food sufficiency and SNAP participation may be protective factors preventing accelerated cognitive decline in older adults.

Classifying End-of-Life Patterns: Evidence from the National Health and Aging Trends Study

BACKGROUND AND OBJECTIVES

End-of-Life (EOL) care quality encompasses multiple domains, which are typically studied in silos. This paper explores inter-relationships across domains and how they simultaneously shape patterns of EOL care quality.

RESEARCH DESIGN AND METHODS

Secondary Analysis using National Health and Aging Trends Study (NHATS). Latent Class Analysis was used to identify subgroups of decedents according to quality of symptoms and needs management, care experience, care processes, and site of death. Multinomial logistic regression was employed to investigate the association between decedent characteristics and class membership.

RESULTS

Five groups of decedents were identified. Multiple sites of death with high care coordination (Class-4:35%) comprised decedents with least concerns regarding symptom management and care experience. Decedents in Predominantly home deaths with no hospice use (Class-1:26%), Predominantly hospital deaths with low hospice use (Class-2:18%), and Multiple sites of death with hospice use (Class-3:7%) presented similar symptom management and care experience patterns. Multiple sites of death with low care coordination (Class-5:14%) comprised decedents experiencing poor quality EOL care across multiple domains. Non-Hispanic Black and Hispanic decedents were more likely to be in Class-2 and decedents with dementia diagnosis in Class-4.

DISCUSSION AND IMPLICATIONS

There is considerable heterogeneity in EOL care patterns. Assessing quality based on discrete metrics in silos may lead to unintended consequences like stinting of necessary care or increased caregiving burden on families. There is a need for greater focus on patient-centeredness and how care processes and structures interact in the context of shifting care patterns, care preferences and payment reforms.

Dementia caregiver burdens predict overnight hospitalization and hospice utilization

OBJECTIVES

To determine sociodemographics and caregiver burdens associated with overnight hospitalization, hospice utilization, and hospitalization frequency among persons with dementia (PWD).

METHODS

Cross-sectional analysis of PWD (n = 899) of the National Health and Aging Trends Study linked to the National Study of Caregiving. Logistic and proportional odds regression determined the effects of caregiver burdens on overnight hospitalization, hospice use, and hospitalization frequency. Differences between PWD alive not-alive groups were compared on overnight hospitalization and frequency.

RESULTS

Alive PWD (n = 804) were 2.36 times more likely to have an overnight hospital stay (p = 0.004) and 1.96 times more likely to have multiple hospitalizations when caregivers found it physically difficult to provide care (p = 0.011). Decedents aged 65-74 (n = 95) were 4.55 times more likely to experience overnight hospitalizations than 85+, hospitalizations were more frequent (odds ratio [OR] = 4.84), and there was a significant difference between PWD alive/not alive groups (p = 0.035). Decedents were 5.60 times more likely to experience an overnight hospitalization when their caregivers had financial difficulty, hospitalizations were more frequent when caregivers had too much to handle (OR = 8.44) and/or no time for themselves (OR = 10.67). When caregivers had no time for themselves, a significant difference between alive/not alive groups (p = 0.018) was detected in hospitalization frequency. PWD whose caregivers had emotional difficulty helping were 5.89 times more likely to utilize hospice than caregivers who did not report emotional difficulty.

SIGNIFICANCE OF RESULTS

Care transitions among PWD at the end of life are impacted by the circumstances and experiences of their caregivers. Subjective caregiver burdens represent potentially modifiable risks for undesired care transitions and opportunities for promoting hospice use. Future work is warranted to identify and address these issues as they occur.

Better Together: Social Contact and Loneliness Among U.S. Older Adults During COVID-19

OBJECTIVES

Coronavirus disease 2019 (COVID-19) resulted in older adults' greater reliance on technology to contact friends and families. However, less is known regarding the association between frequency of varying modes of communication and loneliness among older adults during COVID-19, and current findings are mixed. Therefore, this study aimed to advance this understanding.

METHODS

Using the National Health and Aging Trends Study COVID-19 supplement data, multinomial regression analyses assessed how the frequency of four modes of contact (i.e., phone calls; electronic and social messaging such as e-mails/texts/social media messages; video calls; and in-person visits) during the COVID-19 pandemic was associated with feelings of loneliness among older adults compared to prepandemic (n = 2,564).

RESULTS

Compared to never/less than once a week in-person visits, daily in-person visits were associated with lower odds of reporting more frequent loneliness during COVID-19 versus "about the same" as pre-COVID-19 while controlling for demographics, access to information and communication technologies (ICTs), digital literacy, and health covariates. Compared to those who reported never/less than once a week contact by electronic and social messaging, more frequent contact was associated with higher odds of reporting more frequent loneliness during COVID-19 versus "about the same" as pre-COVID-19 while controlling for other variables in the model. Phone calls and video calls were not significantly related to loneliness.

DISCUSSION

Results suggest that ICTs may not decrease loneliness among older adults. This article discusses potential reasons and barriers, including digital exclusion, and provides recommendations to mitigate the negative effects of social isolation through technology for older adults.

Predicting Hospice Transitions in Dementia Caregiving Dyads: An Exploratory Machine Learning Approach

Background and Objectives

Hospice programs assist people with serious illness and their caregivers with aging in place, avoiding unnecessary hospitalizations, and remaining at home through the end-of-life. While evidence is emerging of the myriad of factors influencing end-of-life care transitions among persons living with dementia, current research is primarily cross- sectional and does not account for the effect that changes over time have on hospice care uptake, access, and equity within dyads.

Research Design and Methods

Secondary data analysis linking the National Health and Aging Trends Study to the National Study of Caregiving investigating important social determinants of health and quality-of-life factors of persons living with dementia and their primary caregivers (n = 117) on hospice utilization over 3 years (2015-2018). We employ cutting-edge machine learning approaches (correlation matrix analysis, principal component analysis, random forest [RF], and information gain ratio [IGR]).

Results

IGR indicators of hospice use include persons living with dementia having diabetes, a regular physician, a good memory rating, not relying on food stamps, not having chewing or swallowing problems, and whether health prevents them from enjoying life (accuracy = 0.685; sensitivity = 0.824; specificity = 0.537; area under the curve (AUC) = 0.743). RF indicates primary caregivers' age, and the person living with dementia's income, census division, number of days help provided by caregiver per month, and whether health prevents them from enjoying life predicts hospice use (accuracy = 0.624; sensitivity = 0.713; specificity = 0.557; AUC = 0.703).

Discussion and Implications

Our exploratory models create a starting point for the future development of precision health approaches that may be integrated into learning health systems that prompt providers with actionable information about who may benefit from discussions around serious illness goals-for-care. Future work is necessary to investigate those not considered in this study-that is, persons living with dementia who do not use hospice care so additional insights can be gathered around barriers to care.

The Experience of Homebound Older Adults During the COVID-19 Pandemic

BACKGROUND

Homebound older adults have heightened risks for isolation and negative health consequences, but it is unclear how COVID-19 has impacted them. We examine social contact and mood symptoms among previously homebound older adults during the COVID-19 pandemic.

DESIGN/SETTING

Cross-sectional analysis using data from the National Health and Aging Trends Study (NHATS), a nationally-representative longitudinal study of aging in the USA.

PARTICIPANTS

A total of 3,112 community-dwelling older adults in 2019 who completed the COVID-19 survey in the summer/fall of 2020.

MEASUREMENTS

Homebound status was defined via self-report as rarely/never leaving home or leaving the house with difficulty or help in the prior month. We measured limited social contact during COVID-19 (in-person, telephone, video or email contacts <once/week), as well as loneliness, anxiety, and depression.

RESULTS

Among homebound older adults, 13.2% experienced limited social contact during COVID-19 vs. 6.5% of the non-homebound. Differences in social contact were greatest for contacts via email/text/social media: 54.9% of the homebound used this <once/week vs. 28.4% of the non-homebound. In adjusted analyses of those without limited social contact prior to the pandemic, the homebound had higher but not significantly different odds (OR 1.83; 95% CI 0.95-3.52) of limited social contact during COVID-19, with increased risk among the older individuals, those with dementia, and those in assisted living facilities. Of the homebound, 13.2% felt lonely every/most days during the pandemic vs. 7.7% of non-homebound older adults. Homebound and non-homebound older adults reported similar rates of increased loneliness, anxiety, or depression during COVID-19. Fewer homebound older adults learned a new technology during the pandemic (16.3%) vs. non-homebound older adults (30.4%).

DISCUSSION

Isolation among homebound older adults increased during COVID-19, partially due to differences in technology use. We must ensure that homebound persons have the connection and care they need including new technologies for communication during and beyond COVID-19.

Examining subjective well-being among older adults using pain medications

PURPOSE

To examine the relationship between social participation and subjective well-being (SWB) among older adults using pain medications and evaluate the impact of sex on this relationship.

METHODS

A cross-sectional analysis was conducted using the 2019 National Health and Aging Trends Study data, a nationally-representative sample of Medicare beneficiaries 65 years and older. Individuals were included if they reported taking pain medications for five days or more per week over the last month. Social participation was operationalized using the sum score of four items: visiting family and friends, going out for enjoyment, attending religious services, and participation in other organized activities. SWB was operationalized as a latent variable using four items reflecting positive and negative emotions, and three items reflecting self-evaluation. Structural equation modeling was used to test the relationship between key study constructs, as well as the moderating effect of sex on the relationship between social participation and SWB.

RESULTS

A total of 964 (weighted N = 7,660,599) participants were included in the study. Most participants were female (61.3%), White (81.0%), community-dwelling (94.9%) older adults. Confirmatory factor analysis showed appropriate fit for SWB. Social participation had a statistically significant association with SWB (unstandardized regression coefficient = 0.133; 95% CI 0.071, 0.196; p < 0.001) after adjusting for covariates. However, this relationship was not moderated by sex (p = 0.836).

CONCLUSION

Social participation is positively and significantly associated with SWB among older adults using pain medications. Interventions aimed at improving SWB should consider incorporating a social activities component.

Development and Validation of a Novel Indicator of Visual Disability in the National Health and Aging Trends Study

Background and Objectives

The National Health and Aging Trends Study (NHATS) is an ongoing, nationally representative panel study of older adults that collects data on health and disability, including measures on self-reported visual disability (SRVD). Prior studies assessing the association of SRVD with other measures of healthy aging have classified participants as having or not having SRVD, which does not capture the full spectrum of SRVD reported by participants. Therefore, we sought to develop and validate an ordinal indicator of SRVD to facilitate research on the impact of late-life SRVD on health and disability in NHATS.

Research Design and Methods

We used 2015 NHATS data with community-dwelling participants who answered survey questions about visual functioning and vision aid use. Based on responses, participants were categorized into one of 6 groups: blind, near and distance SRVD without vision aid use, near and distance SRVD with vision aid use, near or distance SRVD without vision aid use, near or distance SRVD with vision aid use, or no SRVD. Multivariable Poisson regression models assessed convergent validity of the ordinal SRVD scale with functional activity and well-being scores, while adjusting for demographic factors and medical comorbidities.

Results

Of the 7061 eligible individuals, 8.3% (n = 742) reported SRVD. Using our novel ordinal indicator of SRVD in NHATS, higher levels of SRVD were significantly associated with lower functional activity scores (p < .001 for all) and subjective well-being (p < .001), except for participants reporting blindness. Significant differences between SRVD groups were found, which could not be captured using a binary SRVD variable.

Discussion and Implications

A novel 6-level SRVD scale in NHATS demonstrated convergent validity with functional activity and well-being scales. This scale provides a new tool with improved measurement precision to study the impact of late-life SRVD on health and disability in a nationally representative study of older adults.

The dynamics of being homebound over time: A prospective study of Medicare beneficiaries, 2012-2018

BACKGROUND/OBJECTIVES

Approximately 2 million people, or 6% of older adults in the United States, are homebound. In cross-sectional studies, homebound older adults have high levels of morbidity and mortality, but there is little evidence of longitudinal outcomes after becoming homebound. The aim of this research is to prospectively assess over 6 years the dynamics of homebound status, ongoing community residence, and death in a population of community-dwelling older adults who are newly homebound.

DESIGN/SETTING

Prospective cohort study using 2011-2018 data from the National Health and Aging Trends Study (NHATS), an annual, nationally-representative longitudinal study of aging in the United States.

PARTICIPANTS

Two hundred and sixty seven newly homebound older adults in 2012.

MEASUREMENTS

Homebound status was defined via self-report as living in the community but rarely/never leaving home in the prior month. Semi-homebound was defined as leaving the house only with difficulty or help.

RESULTS

One year after becoming newly homebound, 33.1% remained homebound, 22.8% were completely independent, 23.8% were semi-homebound, 2.2% were in a nursing home, and 18.0% died. Homebound status is highly dynamic; 6 years after becoming homebound, 13.5% remained homebound and 65.0% had died. Recovering from being homebound at 1 year was associated with younger age and lower baseline rates of receiving help with activities of daily living, in particular, with bathing.

CONCLUSION

Homebound status is a dynamic state. Even if transient, becoming homebound is strongly associated with functional decline and death. Identifying newly homebound older adults and developing interventions to mitigate associated negative consequences needs to be prioritized.

Place of Death for Persons With and Without Cognitive Impairment in the United States

BACKGROUND/OBJECTIVES

There is increasing recognition that place of death is an important component of quality of end-of-life care (EOLC) and quality of death. This study examined where older persons with and without cognitive impairment die in the United States, what factors contribute to place of death, and whether place of death influences satisfaction with EOLC.

DESIGN

Cross-sectional secondary data analysis.

SETTING

In-person interviews with community-dwelling proxy respondents.

PARTICIPANTS

Data were collected from 1,500 proxies for deceased participants in the National Health and Aging Trends Study (NHATS), a nationally-representative sample of community-dwelling Medicare beneficiaries aged 65 and older.

MEASUREMENTS

Study variables were obtained from the NHATS "last month of life" interview data. Survey weights were applied to all analyses.

RESULTS

Persons with cognitive impairment (CI) most often died at home, while cognitively healthy persons (CHP) were equally likely to die at home or in a hospital. Persons with CI who utilized the Medicare Hospice Benefit were 14.5 times more likely to die at home than in a hospital, and 3.4 times more likely to die at home than a nursing home. CHP who use this benefit were over six times more likely to die at home than in a hospital, and more than twice as likely to die at home than a nursing home. Place of death for CHP was also associated with age and race. Proxies of persons with CI who died at home rated EOLC as more favorable, while proxies of CHP rated in-home and hospital care equally.

CONCLUSION

Findings add to the scant literature identifying factors associated with place of death for older adults with and without CI and results suggest that place of death is a quality of care indicator for these populations. These findings may inform EOLC planning and policy-making and facilitate greater well-being at end-of-life.

Informal Caregiver Burden, Benefits, and Older Adult Mortality: A Survival Analysis

OBJECTIVE

Informal caregivers are crucial to maintaining older adults' health, but few studies examine how caregiving receipt is associated with older person longevity. In a nationally representative sample, we prospectively explore whether and how having an informal caregiver is associated with older adult overall mortality, and how caregivers' burden and benefits perceptions relate to care recipient mortality.

METHODS

We match six National Health and Aging Trends Study waves (2011-2016) with 2011 National Study of Caregiving data, conducting survival analysis on 7,369 older adults and 1,327 older adult-informal caregiver dyads.

RESULTS

Having an informal caregiver is associated with 36% (p < .001) higher mortality risk over 6-year follow-up, adjusting for demographic, economic, and health factors. Older adults whose caregivers perceive only burden have 38% higher (p < .05) mortality risk than those with caregivers reporting neither burden nor benefits. This risk is reduced from 38% higher to 5% higher (p < .001) for older adults with caregivers reporting benefits alongside burden, compared to those with caregivers reporting neither perception.

DISCUSSION

Having a caregiver may signal impending decline beyond known mortality factors. However, interventions to increase caregivers' benefit perceptions and reduce their burden may decrease mortality risk for older adults with declining health and functional ability.

Self-reported Vision Impairment and Subjective Well-being in Older Adults: A Longitudinal Mediation Analysis

BACKGROUND

Vision impairment (VI) in older adults is associated with declines in well-being. However, the pathways through which poor vision leads to declines in well-being have not been well-described. The purpose of this study was to determine whether activity limitations and social participation restrictions mediate the impact of self-reported VI on subjective well-being.

METHODS

The National Health and Aging Trends Study (NHATS) is a nationally representative longitudinal study of Medicare beneficiaries 65 and older that includes detailed measures of the disablement process. A longitudinal mediation model was conceptualized linking self-reported VI and subjective well-being. Structural equation modeling was used to test the mediating effects of activity limitations and social participation restrictions while adjusting for relevant covariates.

RESULTS

The final sample included 5,431 respondents. At baseline, 8.0% of Medicare beneficiaries had self-reported VI. Subjective well-being scores were significantly lower among respondents with self-reported VI (15.7; 95% confidence interval [CI]: 15.2, 16.2) compared with those without VI (17.6; 95% CI: 17.5, 17.7). Self-reported VI had a significant indirect effect on subjective well-being through limiting mobility (β = -0.04; 95% CI: -0.07, -0.03) and household activities (β = -0.05; 95% CI: -0.08, -0.03), but not self-care limitations (β = 0.0; 95% CI = 0.0, 0.0) or participation restrictions (β = 0.0; 95% CI = -0.01, 0.00). Total indirect effects from all mediation paths accounted for 42% of the effect of VI on well-being.

CONCLUSIONS

Mobility and household activity limitations are significant mediators that explain a considerable portion of the impact of poor vision on well-being. Interventions to promote successful accommodation may result in greater overall well-being for older adults with poor vision.

The caregiving dyad: Do caregivers' appraisals of caregiving matter for care recipients' health?

Caregiving experiences matter for caregivers' own wellbeing, but few studies link caregivers' burden and benefit perceptions with recipient outcomes. Following the stress process model, I prospectively explore how caregivers' experiences shape recipients' mental health. I match US National Health and Aging Trends Study and National Study of Caregivers, employing logistic regression on 781 older adult-informal caregiver dyads. I examine how caregivers' appraisals shape recipients' subsequent depression and anxiety, with caregiver mental health and recipient unmet care need as key covariates. Recipients receiving care from caregivers reporting predominantly benefits are less likely to become depressed than counterparts receiving care from persons reporting predominantly burden. Recipients receiving care from persons reporting benefits even alongside low or moderate burden are also less likely to become anxious. Recipient unmet care need, but not caregiver mental health, is associated with recipient mental health. Improving caregiver conditions may have benefits for both dyad members.

Prevalence of Falls and Fall-Related Outcomes in Older Adults with Self-Reported Vision Impairment

OBJECTIVES

To determine the prevalence of falls, fear of falling (FoF), and activity limitation due to FoF in a nationally representative study of older adults with self-reported vision impairment (VI).

DESIGN

Cross-sectional analysis of panel survey data.

SETTING

National Health and Aging Trends Study, a nationally representative survey administered annually from 2011 to 2016 to U.S. Medicare beneficiaries aged 65 and older.

PARTICIPANTS

Respondents (N=11,558) who contributed 36,229 participant observations.

MEASUREMENTS

We performed logistic regression to calculate the unadjusted and adjusted prevalence of self-reported history of more than 1 fall in the past year, any fall in the past month, FoF, and activity limitation due to FoF in participants with and without self-reported VI.

RESULTS

The weighted proportion of participants reporting VI was 8.6% (95% confidence interval (CI)=8.0-9.2%). The unadjusted prevalence of more than 1 fall in the past year was 27.6% (95% CI=25.5-29.7%) in participants with self-reported VI and 13.2% (95% CI=12.7-13.7%) in those without self-reported VI. In respondents with self-reported VI, the prevalence of FoF was 48.3% (95% CI=46.1-50.6%) and of FoF limiting activity was 50.8% (95%CI 47.3-54.2%), and in those without self-reported VI, the prevalence of FoF was 26.7% (95% CI=25.9-27.5%) and of FoF limiting activity was 33.9% (95% CI=32.4-35.4%). The prevalence of all fall and fall-related outcomes remained significantly higher among those with self-reported VI after adjusting for sociodemographics and potential confounders.

CONCLUSION

The prevalence of falls, FoF, and activity limitation due to FoF is high in older adults with self-reported VI. This is the first study to provide nationally representative data on the prevalence of fall-related outcomes in older Americans with self-reported VI. These findings demonstrate the need to treat avoidable VI and to develop interventions to prevent falls and fall-related outcomes in this population. J Am Geriatr Soc 67:239-245, 2019.

Association between anxious symptoms and sleeping medication use among US older adults

OBJECTIVE

To investigate the relationship between anxiety symptoms and sleeping medication use among a nationally representative sample of US older adults.

DESIGN

Cross-sectional design using data from the 2011 National Health and Aging Trends Study to examine the relationship between anxiety symptoms as rated by the Generalized Anxiety Disorder-2 and self-reported sleeping medication use. Survey weights were applied to account for complex survey design. Logistic regression was used to measure the association between anxiety symptoms and sleeping medication use after adjusting for sociodemographic factors, physical health, and other sleep-related issues.

RESULTS

In 2011, 13.1% of respondents experienced high anxiety symptoms and 29.0% reported taking a sleeping medication at least once a week during the last 30 days. Results estimate that approximately 4 million US older adults have clinically significant anxiety symptoms and approximately 10 million US older adults used a sleeping medication in the last 30 days. Adjusted results revealed that high anxiety symptoms are significantly associated with sleeping medication use compared to low anxiety symptoms (AOR = 1.57; 95% CI, 1.29-1.91). Depression symptoms were also associated with sleeping medication (AOR = 1.29; 95% CI, 1.08-1.55).

CONCLUSIONS

Results demonstrated that anxiety symptoms are significantly associated with sleeping medication use among US older adults. We also found that depressive symptoms, chronic conditions, and worse self-rated health are associated with sleeping medication use. As sleeping medications are associated with adverse health events, these results have clinical implications for treating anxiety symptoms among older patients.

INTERSECTING SELF-REPORTED MOBILITY AND GAIT SPEED TO CREATEA MULTI-DIMENSIONAL MEASURE OF AMBULATION: THE "AMBULATION SPEED-ENDURANCE" (ASE) TYPOLOGY

BACKGROUND

Assessing mobility through readily available and affordable protocols may help advance public health by providing early detection and implementing intervention therapies aimed at mitigating the progression from physiological vitality to disability at older ages. Until now, little attention has been given to how self-reported mobility (SRM) and gait speed can be combined in a categorization scheme.

OBJECTIVES

The specific aim of this report is to introduce the Ambulation Speed-Endurance (ASE) Typology to the literature-a classification system that intersects SRM and gait speed to create a multi-dimensional measure of ambulation.

DESIGN

Cross-sectional.

SETTING

Community-dwelling older adults in the United States.

PARTICIPANTS

Evidence is provided from the National Health and Aging Trends Study (NHATS) that community-dwelling older adults (n=5,403) may be found in each of the ASE Typologies. The discussion is complimented by investigating the cross-sectional predictors of a "Discrepancy Score" (measure of gap between speed and endurance) amongst those with gait speeds < 0.99 m/sec (n=4,521).

RESULTS

Multivariable linear regression results indicate level of severity in speed-endurance discrepancy is higher amongst: non-Latino-Blacks (β=0.48); Latinos (β=0.42); older ages; and lower educated. Models also show that severity in speed-endurance discrepancy is lower amongst: females (β=-0.38); those with higher body mass index; with more chronic health conditions; and poorer self-rated health.

CONCLUSION

Research should continue to investigate how to optimize SRM.

Pain in Community-Dwelling Older Adults with Dementia: Results from the National Health and Aging Trends Study

OBJECTIVES

To report prevalence, correlates, and medication management of pain in community-dwelling older adults with dementia.

DESIGN

Cross-sectional.

SETTING

In-person interviews with self- or proxy respondents living in private residences or non-nursing home residential care settings.

PARTICIPANTS

Nationally representative sample of community-dwelling Medicare beneficiaries aged 65 and older enrolled in the National Health and Aging Trends Study 2011 wave.

MEASUREMENTS

Dementia status was determined using a modified previously validated algorithm. Participants were asked whether they had had bothersome and activity-limiting pain over the past month. A multivariable Poisson regression model was used to determine the relationship between bothersome pain and sociodemographic and clinical characteristics.

RESULTS

Of the 7,609 participants with complete data on cognitive function, 802 had dementia (67.2% aged ≥80, 65.0% female, 67.9% white, 49.7% proxy response, 32.0% lived alone, 18.8% lived in residential care); 670 (63.5%) participants with dementia experienced bothersome pain, and 347 (43.3%) had pain that limited activities. These rates were significantly higher than in a propensity score-matched cohort without dementia (54.5% bothersome pain, P < .001, 27.2% pain that limited activity, P < .001). Proxies reported slightly higher rates of pain than self-respondents, but differences were statistically significant only for activity-limiting pain (46.6% proxy vs 40.1% self, P = .03). Correlates of bothersome pain included arthritis, heart and lung disease, less than high school education, activity of daily living disability, depressive and anxiety symptoms, and low energy. Of those reporting pain, 30.3% stated that they rarely or never took any medications for pain.

CONCLUSION

Community-living older adults with dementia are at high risk of having pain. Creative interventions and programs are needed to manage pain adequately in this vulnerable population.