Table 2.
Sensitivity, specificity and predictive values of three sarcopenia screening in patients with ILD
| Sensitivity (%) | Specificity (%) | PV+ | PV− | |
|---|---|---|---|---|
| All patients | ||||
| Calf circumference | 96.0 | 60.0 | 53.3 | 97.0 |
| SARC-F | 24.0 | 92.0 | 60.0 | 72.1 |
| SARC-CalF | 68.0 | 66.0 | 48.6 | 81.4 |
| Low ILD-GAP score < 3 | ||||
| Calf circumference | 100 | 41.0 | 47.4 | 100 |
| SARC-F | 11.1 | 94.0 | 50.0 | 66.7 |
| SARC-CalF | 77.8 | 53.0 | 46.7 | 81.8 |
| High ILD-GAP score ≥ 3 | ||||
| Calf circumference | 91.7 | 72.0 | 57.9 | 95.5 |
| SARC-F | 33.3 | 93.0 | 66.7 | 77.1 |
| SARC-CalF | 58.3 | 72.0 | 46.7 | 80.8 |
ILD, interstitial lung disease; ILD-GAP, interstitial lung disease-gender, age, lung physiology score; PV+, positive predictive value, PV−, negative predictive value; SARC-F, the strength, assistance in walking, rising from a chair, climbing stairs, and falls; SARC-CalF, SARC-F combined with calf circumference