Table 3.
Sensitivity, specificity and predictive values of items of the SARC-F and calf circumference in screening for sarcopenia in patients with ILD
| SARC-CalF | Positive screening n (%) |
Sensitivity (%) | Specificity (%) | PV+ | PV− |
|---|---|---|---|---|---|
| Strength | 29 (34.5) | 33.3 | 69.0 | 36.0 | 66.0 |
| Assistance in walking | 8 (9.5) | 71.4 | 72.0 | 20.0 | 96.2 |
| Rising from a chair | 11 (13.1) | 44.4 | 70.0 | 16.0 | 90.1 |
| Climbing stairs | 48 (57.1) | 34.1 | 71.0 | 60.0 | 45.3 |
| Falls | 16 (19.0) | 33.3 | 68.0 | 20.0 | 81.1 |
| Calf circumference | 48 (57.1) | 100 | 51.0 | 50.0 | 100 |
ILD, interstitial lung disease; PV+, positive predictive value, PV−, negative predictive value; SARC-F, strength, assistance in walking, rising from a chair, climbing stairs, and falls; SARC-CalF, the SARC-F combined with calf circumference