Frail Phenotype and Disability Prediction in Community-Dwelling Older People: A Systematic Review and Meta-Analysis of Prospective Cohort Studies.

The studies were observational, so they show association, not that frailty caused disability or that treatment would prevent it. Heterogeneity was moderate to high, so the pooled estimates may not apply equally to every setting or population. Follow-up varied widely from 6 months to 10 years, which can change how disability risk is estimated. Studies used different frailty criteria and adjusted for different confounding variables, which may make the estimates less consistent. Publication bias was suggested for instrumental activities, although removing one outlier study did not change the conclusion. Basic activity results could not be compared across both frailty criteria because none of the studies reported Study of Osteoporotic Fractures data for basic activities. The review included only community-dwelling adults aged 60 years or older, so it does not speak directly to younger adults or institutionalized older adults.

Do not conclude that treating frailty prevents disability. This is an observational meta-analysis of cohort studies, with moderate to high heterogeneity and possible publication bias for instrumental daily living outcomes.