CHKA and sarcopenia: In the multivariable analysis, sarcopenia maintained its independent association with increased mortality risk (HR: 0.457, 95% CI: 0.249–0.841, p = 0.012), as did CKI (HR: 3.097, 95% CI: 1.019–9.409, p = 0.046) and diuretics (HR: 2.846, 95% CI: 1.036–7.815, p = 0.042).