Table 4 Optimal calf circumference cut-offs for screening low muscle mass
| Â | Optimal calf circumference cut-off (cm) | Sensitivity (%) | Specificity (%) |
|---|---|---|---|
• All older adults (n = 6,404) |  |  |  |
 Men (n = 1445) | < 34 | 85.4 | 70.2 |
 Women (n = 4959) | < 33 | 87.1 | 60.5 |
• Obese older adults (n = 1,995) |  |  |  |
 Men (n = 583) | < 34 | 94.2 | 34.5 |
< 35 | 88.7 | 55.2 | |
 Women (n = 1412) | < 33 | 89.5 | 33.6 |
< 34 | 80.6 | 54.0 | |
• Older adult aged ≥ 75 years (n = 1412) |  |  |  |
 Men (n = 387) | < 34 | 75.6 | 87.0 |
 Women (n = 198) | < 33 | 84.6 | 74.9 |