RESUMO
BACKGROUND: Older adults surviving critical illness often experience new or worsening functional impairments. Modifiable positive psychological constructs, like resilience, may mitigate post-intensive care morbidity. RESEARCH QUESTION: Is pre-ICU resilience associated with: (1) post-ICU survival; (2) the drop in post-ICU functional independence; and (3) a lesser decline of independence before versus after the ICU? STUDY DESIGN AND METHODS: We performed a retrospective cohort study using Medicare-linked Health and Retirement Study surveys from 2006-2018. We included Older adults ≥65 years admitted to an ICU. We calculated resilience before ICU admission. The resilience measure was defined from the Simplified Resilience Score which was previously adapted and validated for the Health and Retirement Study. Resilience was scored using the leave-behind survey normalized to 0 (lowest resilience) to 12 (highest resilience) point scale. Outcomes were survival and probability of functional independence. We modeled survival using Gompertz models and independence using joint survival models adjusting for sociodemographic and clinical variables. We estimated average marginal effects to determine independence probabilities. RESULTS: Across 3,409 patients ≥65 years old admitted to ICUs, pre-existing frailty (30.5%) and cognitive impairment (24.3%) were common. Most patients were previously independent (82.7%). Mechanical ventilation occurred in 14.8% and sepsis in 43.2%. Highest versus lowest resilience had lower risk of post-ICU mortality (aHR 0.81 95% CI [0.70, 0.94]). Higher resilience was associated with greater likelihood in post-ICU independence (estimated probability of independence 5 years post-ICU in highest-to-lowest resilience: 0.53 CI 95% [0.33, 0.74], 0.47 [0.26, 0.68], 0.49 [0.28, 0.70], 0.36 [0.17, 0.55] p<0.01). Resilience was not associated with a difference in the drop of independence across resilience groups, nor a difference in declines of independence post-ICU. INTERPRETATION: ICU survivors with higher resilience had increased rates of survival and functional independence, though the slope of functional decline did not differ by resilience group pre- to post-ICU.
RESUMO
BACKGROUND: Nearly 2.9 million older Americans with lower incomes live in subsidized housing. While regional and single-site studies show that this group has higher rates of healthcare utilization compared to older adults in the general community, little is known about healthcare utilization nationally nor associated risk factors. METHODS: We conducted a retrospective cohort study of Medicare beneficiaries aged ≥65 enrolled in the National Health and Aging Trends Study in 2011, linked to Medicare claims data, including individuals living in subsidized housing and the general community. Participants were followed annually through 2020. Outcomes were hospitalization, short-term skilled nursing facility (SNF) utilization, long-term care utilization, and death. Fine-Gray competing risks regression analysis was used to assess the association of subsidized housing residence with hospitalization and nursing facility utilization, and Cox proportional hazards regression analysis was used to assess the association with death. RESULTS: Among 6294 participants (3600 women, 2694 men; mean age, 75.5 years [SD, 7.0]), 295 lived in subsidized housing at baseline and 5999 in the general community. Compared to older adults in the general community, those in subsidized housing had a higher adjusted subdistribution hazard ratio [sHR] of hospitalization (sHR 1.21; 95% CI, 1.03-1.43), short-term SNF utilization (sHR 1.49; 95% CI, 1.15-1.92), and long-term care utilization (sHR 2.72; 95% CI, 1.67-4.43), but similar hazard of death (HR, 0.86; 95% CI, 0.69-1.08). Individuals with functional impairment had a higher adjusted subdistribution hazard of hospitalization and short-term SNF utilization and individuals with dementia and functional impairment had a higher hazard of long-term care utilization. CONCLUSIONS: Older adults living in subsidized housing have higher hazards of hospitalization and nursing facility utilization compared to those in the general community. Housing-based interventions to optimize aging in place and mitigate risk of nursing facility utilization should consider risk factors including functional impairment and dementia.
