biostudies-literatureSison SDMNIA NIH HHSNational Institutes of HealthNIH HHSNational Institute on Agingglae094https://www.ebi.ac.uk/biostudies/studies/S-EPMC11167486biostudies-literatureUnknown79(7)<h4>Background</h4>The relationship of claims-based frailty index (CFI), a validated measure to identify frail individuals using Medicare data, and frailty measures used in clinical practice has not yet been fully explored.<h4>Methods</h4>We identified community-dwelling participants of the 2015 National Health and Aging Trends Study (NHATS) whose CFI scores could be calculated using linked Medicare claims. We calculated 9 commonly used clinical frailty measures from their NHATS in-person examination: Study of Osteoporotic Fracture Index (SOF), FRAIL Scale, Frailty Phenotype, Clinical Frailty Scale (CFS), Vulnerable Elder Survey-13 (VES-13), Tilburg Frailty Indicator (TFI), Groningen Frailty Indicator (GFI), Edmonton Frail Scale (EFS), and 40-item Frailty Index (FI). Using equipercentile mThe journals of gerontology. Series A, Biological sciences and medical sciencesClaims-Based Frailty Index and Its Relationship With Commonly Used Clinical Frailty Measures.PMC11167486R01 AG071809K24 AG073527K24AG073527R01AG071809Kim DHMcCarthy EPOh GJeong SSison SDMShi SMfalseClaims-Based Frailty Index and Its Relationship With Commonly Used Clinical Frailty Measures.<h4>Background</h4>The relationship of claims-based frailty index (CFI), a validated measure to identify frail individuals using Medicare data, and frailty measures used in clinical practice has not yet been fully explored.<h4>Methods</h4>We identified community-dwelling participants of the 2015 National Health and Aging Trends Study (NHATS) whose CFI scores could be calculated using linked Medicare claims. We calculated 9 commonly used clinical frailty measures from their NHATS in-person examination: Study of Osteoporotic Fracture Index (SOF), FRAIL Scale, Frailty Phenotype, Clinical Frailty Scale (CFS), Vulnerable Elder Survey-13 (VES-13), Tilburg Frailty Indicator (TFI), Groningen Frailty Indicator (GFI), Edmonton Frail Scale (EFS), and 40-item Frailty Index (FI). Using equipercentile m2024-01-01T00:00:00Z2024 Jul2025-07-05T03:04:36.691Z2025-07-05T03:04:36.691ZS-EPMC111674863855760410.1093/gerona/glae094