Patterns of Healthcare Utilization and Spending Among Homebound Older Adults in the USA: an Observational Study.

BACKGROUND: Homebound older adults have complex social, medical, and financial needs, but little is known about their healthcare utilization and spending. OBJECTIVE: To characterize healthcare utilization and spending among homebound older adults. DESIGN: Cohort study using National Health and Aging Trends Study data linked to Medicare Fee-for-Service (FFS) claims data. PARTICIPANTS: Adults aged 70 years and older with Medicare FFS coverage (n = 6468). MAIN MEASURES: In a person-year analysis, survey-weighted rates and adjusted marginal differences in inpatient, outpatient, and emergency department utilization and spending 12 months post-interview were calculated by homebound status, defined as reporting never or rarely (no more than 1 day/week) leaving home in the last month. KEY RESULTS: Compared to the non-homebound, homebound observations had lower annual unadjusted rates of accessing primary care (60.9% vs 71.9%, p < 0.001) and specialist care (61.0% vs 74.9%, p < 0.001) and higher annual rates of emergency department use (54.0% vs 32.6%, p < 0.001) and hospitalization (39.8% vs 19.8%, p < 0.001). Total annual Medicare spending was $11,346 higher among the homebound compared to the non-homebound (p < 0.001). In a single year analysis (2015), homebound older adults accounted for 11.0% of Medicare spending among those over 70 despite making up only 5.7% of this population. 13.6% of the homebound were in the 95th percentile or above of Medicare spending in 2015. In models adjusting for demographic, clinical, and geographic characteristics, homebound status was associated with a decreased likelihood of having an annual primary care or specialist visit and $2226 additional total annual Medicare spending. CONCLUSIONS: Homebound older adults use more hospital-based care and less outpatient care than the non-homebound, contributing to higher levels of overall Medicare spending.

Defining a taxonomy of Medicare-funded home-based clinical care using claims data.

BACKGROUND: As more Americans age in place, it is critical to understand care delivery in the home. However, data on the range of home-based services provided by Medicare is limited. We define a taxonomy of clinical care in the home funded through fee-for-service Medicare and methods to identify receipt of those services. METHODS: We analyzed Fee-for-service (FFS) Medicare claims data from a nationally-representative cohort of older adults, the National Health and Aging Trends Study (NHATS), to identify home-based clinical care. We included 6,664 NHATS enrollees age ≥ 70 and living in the community, observed an average of 3 times each on claims-linked NHATS surveys. We examined provider and service type of home-based clinical care to identify a taxonomy of 5 types: home-based medical care (physician, physician assistant, or nurse practitioner visits), home-based podiatry, skilled home health care (SHHC), hospice, and other fee-for-service (FFS) home-based care. We further characterized home-based clinical care by detailed care setting and visit types. RESULTS: From 2011-2016, 17.8%-20.8% of FFS Medicare beneficiaries age ≥ 70 received Medicare-funded home-based clinical care. SHHC was the most common service (12.8%-16.1%), followed by other FFS home-based care (5.5%-6.5%), home-based medical care (3.2%-3.9%), and hospice (2.6%-3.0%). Examination of the other-FFS home-based care revealed imaging/diagnostics and laboratory testing to be the most common service. CONCLUSIONS: We define a taxonomy of clinical care provided in the home, serving 1 in 5 FFS Medicare beneficiaries. This approach can be used to identify and address research and clinical care gaps in home-based clinical care delivery.

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

Examining variation in state spending on medicaid long-term services and supports for older adults.

State Medicaid programs are the largest source of funding for long-term services and supports (LTSS). We characterized states across quartiles of mean LTSS spending for individuals ≥65 and used the Health and Retirement Study to examine the demographic, functional, and caregiving characteristics across these quartiles. Individuals in states with lower Medicaid spending on LTSS reported more family and friend caregiving hours and were more likely to be from racial and ethnic minority groups. Continued work is needed to improve Medicaid LTSS policy to better support vulnerable populations, particularly in lower quartile states.

Prior Presentations: Abstract accepted for poster presentation at the Presidential Poster Session at the American Geriatrics Society National Conference 2020, Long Beach, CA.

Lifetime history of traumatic brain injury is associated with increased loneliness in adults: A US nationally representative study.

BACKGROUND/OBJECTIVES: An estimated 55 million individuals worldwide live with chronic disability associated with traumatic brain injury (TBI), which may include cognitive, behavioral, and social impairments. Reduced participation in social activities is common after TBI; however, few studies have evaluated loneliness among survivors of TBI. The current study aimed to evaluate the association between history of TBI and loneliness and to identify mediators of this association. METHODS/DESIGN: Retrospective cohort study. Nationally representative sample of N = 724 adults over age 50 years (Health and Retirement Study). Loneliness was evaluated using the 11-item Revised University of California Los Angeles (R-UCLA) Loneliness Scale (range 11-33). Lifetime history of TBI evaluated retrospectively using the Ohio State University TBI Identification Method. We included the following covariates: age, sex, race, and education; and mediators: depressive symptoms, number of comorbidities, chronic pain, difficulty with activities of daily living, and social network index. RESULTS: History of TBI was associated with a 1.28-point (95% CI, 0.46-2.11; P < .05; Cohen's D = 0.284) increase in R-UCLA Loneliness Scale scores after covariate adjustment. Individuals with more recent injuries (within 10 years) and multiple lifetime TBIs reported the highest loneliness scores. In the structural equation model, depressive symptoms partially mediated the relationship between TBI and loneliness. All models were adjusted for US population sampling weights. CONCLUSIONS: History of TBI was associated with greater loneliness compared with individuals without TBI in a representative sample of US adults. Managing depressive symptoms and medical consequences of TBI may be a target to ameliorate reporting of loneliness in this population.

Partner Plan Choices and Medicare Advantage Enrollment Decisions Among Older Adults.

This study examines the association of partner Medicare Advantage plan status over 1 year with beneficiary and plan characteristics.

Association Between Purpose in Life and Glucose Control Among Older Adults.

Background: Greater purpose in life is associated with lower rates of certain chronic diseases. Whether purpose in life can protect against development of prediabetes or type 2 diabetes is unknown. Purpose: To examine the association between purpose in life and blood glucose control among adults ≥50 years. Methods: We conducted a longitudinal cohort study of 3,907 participants of the Health and Retirement Study who at baseline did not have type 2 diabetes or prediabetes. Baseline purpose in life was measured using the Ryff and Keyes' Scales of Psychological Well-Being and grouped into tertiles (high, medium, and low). We used multivariable linear regression to examine the association between baseline purpose in life and HbA1c over 4 years. Multivariable logistic regression was used to examine the association between baseline purpose and incident prediabetes or type 2 diabetes over the same period. Results: After adjusting for sociodemographic factors, body mass index, physical activity, and physical and mental health factors, HbA1c was 0.07 percentage points lower among participants with high purpose than those with low purpose (95% confidence interval [CI] -0.12 to -0.02; p = .011). Participants with high purpose had lower odds of developing prediabetes or type 2 diabetes than those with low purpose (adjusted odds ratio 0.78; 95% CI 0.62 to 0.98; p = .037). Conclusions: Among older adults, greater purpose in life is associated with a lower incidence of prediabetes or type 2 diabetes. Strategies to promote greater purpose in life should be tested as a part of type 2 diabetes prevention efforts.

Regional Variation in Primary Care Involvement at the End of Life.

PURPOSE: Variation in end-of-life care in the United States is frequently driven by the health care system. We assessed the association of primary care physician involvement at the end of life with end-of-life care patterns. METHODS: We analyzed 2010 Medicare Part B claims data for US hospital referral regions (HRRs). The independent variable was the ratio of primary care physicians to specialist visits in the last 6 months of life. Dependent variables included the rate of hospital deaths, hospital and intensive care use in the last 6 months of life, percentage of patients seen by more than 10 physicians, and Medicare spending in the last 2 years of life. Robust linear regression analysis was used to measure the association of primary care physician involvement at the end of life with the outcome variables, adjusting for regional characteristics. RESULTS: We assessed 306 HRRs, capturing 1,107,702 Medicare Part B beneficiaries with chronic disease who died. The interquartile range of the HRR ratio of primary care to specialist end-of-life visits was 0.77 to 1.21. HRRs with high vs low primary care physician involvement at the end of life had significantly different patient, population, and health system characteristics. Adjusting for these differences, HRRs with the greatest primary care physician involvement had lower Medicare spending in the last 2 years of life ($65,160 vs $69,030; P = .003) and fewer intensive care unit days in the last 6 months of life (2.90 vs 4.29; P <.001), but also less hospice enrollment (44.5% of decedents vs 50.4%; P = .004). CONCLUSIONS: Regions with greater primary care physician involvement in end-of-life care have overall less intensive end-of-life care.