Dataset Information

Linking Neighborhood Context and Health in Community-Dwelling Older Adults in the Medicare Advantage Program.

ABSTRACT: OBJECTIVES:To examine whether neighborhood context moderates the relationship between multiple chronic conditions (MCCs) and function in Medicare Advantage (MA) beneficiaries. DESIGN:Cross-sectional study. SETTING:Medicare Health Outcome Survey Cohort 16 baseline data from 2013. PARTICIPANTS:MA beneficiaries aged 65 and older (N=187,434). MEASUREMENTS:We defined disadvantaged neighborhoods as those with an Area Deprivation Index greater than the 85th percentile. MCCs was defined as having 2 or more chronic conditions. The primary outcome was any self-reported functional limitations with a basic or instrumental activity of daily living. We used survey-weighted multivariate linear probability regression to examine whether the neighborhood disadvantage moderates the relationship between MCCs and report of a functional limitation. RESULTS:More than one third (35.6%) of the sample reported a functional limitation. Beneficiaries with MCCs were more likely to report a functional limitation those with 0 or 1 chronic condition (odds ratio (OR)=2.63, 95% confidence interval (CI)=2.50-2.77). Beneficiaries in more-disadvantaged neighborhoods were more likely to report a functional limitation than those in less-disadvantaged neighborhoods (OR=1.14, 95% CI=1.08-1.21). In older adults with MCCs, the probability of reporting a functional limitation was 12 percentage points greater in those living in more-disadvantaged neighborhoods than in those living in less-disadvantaged neighborhoods. CONCLUSION:Neighborhood context is a significant predictor of functional limitation and moderates the association between chronic conditions and functional limitations. Health plans and public health officials could use publicly available indicators such as the ADI to target interventions to reduce functional impairment.

SUBMITTER: Jung D

PROVIDER: S-EPMC6105383 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Linking Neighborhood Context and Health in Community-Dwelling Older Adults in the Medicare Advantage Program.

Jung Daniel D Kind Amy A Robert Stephanie S Buckingham William W DuGoff Eva E

Journal of the American Geriatrics Society 20180412 6

<h4>Objectives</h4>To examine whether neighborhood context moderates the relationship between multiple chronic conditions (MCCs) and function in Medicare Advantage (MA) beneficiaries.<h4>Design</h4>Cross-sectional study.<h4>Setting</h4>Medicare Health Outcome Survey Cohort 16 baseline data from 2013.<h4>Participants</h4>MA beneficiaries aged 65 and older (N=187,434).<h4>Measurements</h4>We defined disadvantaged neighborhoods as those with an Area Deprivation Index greater than the 85<sup>th</sup ...[more]

PMID: 29648689

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Project description:ObjectivesTo determine the relationship between neighborhood-level socioeconomic characteristics, life-space mobility, and incident falls in community-dwelling older adults.DesignProspective, observational cohort study with a baseline in-home assessment and 6-month telephone follow-up.SettingCentral Alabama.ParticipantsCommunity-dwelling adults aged 65 and older recruited from a random sample of Medicare beneficiaries (N = 1,000).MeasurementsNeighborhood disadvantage was measured using a composite index derived from baseline neighborhood-level residential census tract socioeconomic variables. Data on individual-level socioeconomic characteristics, clinical variables, and life-space collected at baseline were included as covariates in a multivariate model using generalized estimating equations to assess the association with incident falls in the 6 months after baseline.ResultsOf the 940 participants who completed baseline and follow-up assessments, 126 (13%) reported one or more new falls in the 6 months after baseline. There was an independent nonlinear association between neighborhood disadvantage (according to increasing quartiles of disadvantage) and incident falls after adjusting for confounders: The lowest quartile served as reference; 2nd quartile odds ratio (OR) = 2.4, 95% confidence interval (CI) = 1.2-4.6; 3rd quartile OR = 1.9, 95% CI = 1.0-3.7; 4th quartile OR = 3.2, 95% CI = 1.7-6.0. Each 10-point decrement in life-space (OR = 1.2, 95% CI = 1.0-1.3) was associated with a higher risk of falls.ConclusionGreater neighborhood disadvantage was associated with greater risk of falls. Life-space also contributes separately to fall risk. Community-dwelling older adults in disadvantaged neighborhoods, particularly those with limited mobility, may benefit from a more-rigorous assessment of their fall risk by healthcare providers. Neighborhood level socioeconomic characteristics should also be an important consideration when identifying vulnerable populations that may benefit the most from fall prevention programs.

Project description:Maintaining high levels of daily activity and physical capability have been proposed as important constituents to promote healthy brain and cognitive aging. Studies investigating the associations between brain health and physical activity in late life have, however, mainly been based on self-reported data or measures designed for clinical populations. In the current study, we examined cross-sectional associations between physical activity, recorded by an ankle-positioned accelerometer for seven days, physical capability (grip strength, postural control, and walking speed), and neuroimaging based surrogate markers of brain health in 122 healthy older adults aged 65-88 years. We used a multimodal brain imaging approach offering complementary structural MRI based indicators of brain health: global white matter fractional anisotropy (FA) and mean diffusivity (MD) based on diffusion tensor imaging, and subcortical and global brain age based on brain morphology inferred from T1-weighted MRI data. In addition, based on the results from the main analysis, follow-up regression analysis was performed to test for association between the volume of key subcortical regions of interest (hippocampus, caudate, thalamus and cerebellum) and daily steps, and a follow-up voxelwise analysis to test for associations between walking speed and FA across the white matter Tract-Based Spatial Statistics (TBSS) skeleton. The analyses revealed a significant association between global FA and walking speed, indicating higher white matter integrity in people with higher pace. Voxelwise analysis supported widespread significant associations. We also found a significant interaction between sex and subcortical brain age on number of daily steps, indicating younger-appearing brains in more physically active women, with no significant associations among men. These results provide insight into the intricate associations between different measures of brain and physical health in old age, and corroborate established public health advice promoting physical activity.

Dataset Information

Linking Neighborhood Context and Health in Community-Dwelling Older Adults in the Medicare Advantage Program.

Publications

Linking Neighborhood Context and Health in Community-Dwelling Older Adults in the Medicare Advantage Program.

Similar Datasets

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