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On average, as people age, they accumulate more health deficits and have an increased risk of death. The deficit accumulation-based frailty index (FI) can quantify health and its outcomes in aging. Previous studies have suggested that women show higher FI values than men and that the highest FI score (the "limit to frailty") occurs at a value of FI ~ 0.7. Even so, gender differences in the limit to frailty have not been reported.

the journals of gerontology. series a, biological sciences and medical sciences

Sex Differences in the Limit to Deficit Accumulation in Late Middle-Aged and Older Chinese People: Results From the Beijing Longitudinal Study of Aging