1. What Cut-Point in Gait Speed Best Discriminates Community-Dwelling Older Adults With Mobility Complaints From Those Without? A Pooled Analysis From the Sarcopenia Definitions and Outcomes Consortium
- Author
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Cawthon, Peggy M, Patel, Sheena M, Kritchevsky, Stephen B, Newman, Anne B, Santanasto, Adam, Kiel, Douglas P, Travison, Thomas G, Lane, Nancy, Cummings, Steven R, Orwoll, Eric S, Duchowny, Kate A, Kwok, Timothy, Hirani, Vasant, Schousboe, John, Karlsson, Magnus K, Mellström, Dan, Ohlsson, Claes, Ljunggren, Östen, Xue, Qian-Li, Shardell, Michelle, Jordan, Joanne M, Pencina, Karol M, Fielding, Roger A, Magaziner, Jay, Correa-de-Araujo, Rosaly, Bhasin, Shalender, and Manini, Todd M
- Subjects
Clinical Research ,Aging ,Aged ,Female ,Gait ,Humans ,Independent Living ,Male ,Mobility Limitation ,Sarcopenia ,Walking ,Walking Speed ,Classification and regression trees ,Gait speed ,Mobility limitation ,Clinical Sciences ,Gerontology - Abstract
BackgroundCut-points to define slow walking speed have largely been derived from expert opinion.MethodsStudy participants (13 589 men and 5043 women aged ≥65years) had walking speed (m/s) measured over 4-6 m (mean ± SD: 1.20 ± 0.27 m/s in men and 0.94 ± 0.24 m/s in women.) Mobility limitation was defined as any self-reported difficulty with walking approximately 1/4 mile (prevalence: 12.6% men, 26.4% women). Sex-stratified classification and regression tree (CART) models with 10-fold cross-validation identified walking speed cut-points that optimally discriminated those who reported mobility limitation from those who did not.ResultsAmong 5043 women, CART analysis identified 2 cut-points, classifying 4144 (82.2%) with walking speed ≥0.75 m/s, which we labeled as "fast"; 478 (9.5%) as "intermediate" (walking speed ≥0.62 m/s but
- Published
- 2021