Figure 4

(A) Proportion of the number of risk factors in each risk group (age ≥ 73.5 years, Geriatric Nutritional Risk Index ≤ 102.1, and branched-chain amino acid ≤ 372 µmol/L). (B) The prevalence of sarcopenia in each group stratified by the number of risk factors. The prevalence of sarcopenia in the group with all three risk factors was the highest among the four groups (77.8% [21/27]; p < 0.001, adjusted residual = |6.2|), while the prevalence of sarcopenia in the group with no risk factors was the lowest (1.8% [1/56]; p < 0.001, adjusted residual = |5.1|), and its prevalence increased stepwise as the number of risk factors increased (p < 0.001). C–A Cochran–Armitage test; C–S Chi-squared test.