Functional Impairments, Phenotypic Frailty and Sector-Specific Incremental Healthcare Costs in Older Adults.

Ensrud KE, Schousboe JT, Kats AM, Taylor BC, Duan-Porter W, Sheets KM, Boyd CM, Cawthon PM, Langsetmo L. Functional Impairments, Phenotypic Frailty and Sector-Specific Incremental Healthcare Costs in Older Adults. The journals of gerontology. Series A, Biological sciences and medical sciences. 2024 Oct 9.

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Abstract:

BACKGROUND: This study quantifies incremental healthcare expenditures of functional impairments and phenotypic frailty in specific healthcare sectors. METHODS: Pooled 2023 analysis of 4 prospective cohort studies linked with Medicare claims including 4318 women and 3847 men attending an index examination (2002-2011). Annualized inpatient, skilled nursing facility (SNF), home healthcare (HHC) and outpatient costs (2023 dollars) ascertained for 36 months following index examination. Functional impairments (difficulty performing 4 activities of daily living) and frailty phenotype (operationalized using 5 components) derived from cohort data. Weighted multimorbidity index including demographics derived from claims. RESULTS: Mean age at index examination was 79.2 years. After accounting for multimorbidity and each other, average annualized incremental costs of 3-4 functional impairments versus no impairment in women (men) was $2838 ($5516) in inpatient, $1572 ($1446) in SNF and $1349 ($1060) in HHC sectors; average incremental costs of phenotypic frailty versus robust in women (men) was $4100 (not significant for men) in inpatient, $1579 ($1254) in SNF and $645 ($526) in HHC sectors. Incremental inpatient costs were primarily due to a higher hospitalization risk, while incremental SNF and HHC costs were related to both increased risks of utilization and higher costs among individuals with utilization. Neither geriatric domain was associated with outpatient costs. CONCLUSIONS: In this study of community-dwelling beneficiaries, functional impairments were independently associated with higher subsequent expenditures in inpatient, SNF and HHC sectors among both sexes. Phenotypic frailty was independently associated with higher subsequent inpatient costs in women, and higher SNF and HHC costs in both sexes.