Exploring the relationship between appendicular skeletal muscle index and urge urinary incontinence risk in adult women: a cross-sectional analysis of the National Health and Nutrition Examination Survey.

Both the prevalence of low ASMI and UUI exhibited an increasing trend with advancing age. 4 Discussion This study aimed to investigate the relationship between the appendicular skeletal muscle index (ASMI) and urge urinary incontinence (UUI) in a large cohort of 19,009 adult women (aged ≥20 years) using NHANES data on ASM, BMI, and UUI from 2001–2006 and 2011–2018.

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RCS analysis revealed a nonlinear relationship between ASMI and the risk of UUI, showing a decreasing trend in UUI risk as ASMI increases ( Figure 2 ; p for overall <0.001, p for nonlinearity = 0.02). 3.3 Subgroup analysis Based on stratified analysis considering age, PIR, marital status, citizenship, education attainment, smoking status, race, hysterectomy, stroke, vigorous activities, congestive heart failure, diabetes, hypertension, and previous pregnancies ( Table 3 ).

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