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What is the prevalence of prefrailty and frailty in South America a systematic review of observational studies?

According to one systematic review, the mean prevalence of prefrailty in South American older adults is 46.8% and frailty is 21.7%. This article examines the findings of a systematic review of observational studies to address the question, **What is the prevalence of prefrailty and frailty in South America a systematic review of observational studies?**