Table 6. Sensitivity, specificity, positive and negative predictive values and receiver operating characteristic curve model of the SARC-F questionnaires against six sets of international diagnostic criteria of sarcopenia.
| Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy | AUC | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M | W | Total | M | W | Total | M | W | Total | M | W | Total | M | W | Total | M | W | Total | |
| EWGSOP1 | 29.4 | 37.5 | 33.3 | 90.7 | 80.8 | 85.0 | 50.0 | 30.0 | 36.7 | 80.3 | 85.5 | 83.1 | 76.1 | 73.0 | 74.4 | 0.718 | 0.616 | 0.652 |
| EWGSOP2 | 42.9 | 54.6 | 50.0 | 89.1 | 82.1 | 85.2 | 30.0 | 30.0 | 30.0 | 93.4 | 92.8 | 93.1 | 84.5 | 78.7 | 81.3 | 0.699 | 0.720 | 0.711 |
| FNIH | 16.7 | 61.5 | 47.4 | 86.2 | 84.2 | 85.1 | 10.0 | 40.0 | 30.0 | 91.8 | 92.8 | 92.3 | 80.3 | 80.9 | 80.6 | 0.636 | 0.782 | 0.728 |
| AWGS | 42.9 | 37.5 | 39.1 | 89.1 | 80.8 | 84.7 | 30.0 | 30.0 | 30.0 | 93.4 | 85.5 | 89.2 | 84.5 | 73.0 | 78.1 | 0.699 | 0.635 | 0.670 |
| IWGS | 37.5 | 42.9 | 40.9 | 88.9 | 81.3 | 84.8 | 30.0 | 30.0 | 30.0 | 91.8 | 88.4 | 90.0 | 83.1 | 75.3 | 78.8 | 0.764 | 0.682 | 0.721 |
| SCWD | 33.3 | 40.0 | 37.5 | 88.7 | 81.1 | 84.6 | 30.0 | 30.0 | 30.0 | 90.2 | 87.0 | 88.5 | 81.7 | 74.2 | 77.5 | 0.702 | 0.642 | 0.672 |
Abbreviations: M, men; W, women; PPV, positive predictive values; NPV, negative predictive values; AUC, area under the curve; EWGSOP1, the European Working Group on Sarcopenia in Older People; EWGSOP2, extended group for the European Working Group on Sarcopenia in Older People; FNIH, the Foundation for the National Institutes of Health; AWGS, Asian Working Group on Sarcopenia; IWGS, the International Working Group on Sarcopenia; SCWD, the Society on Sarcopenia, Cachexia and Wasting Disorders