Table 3. Diagnostic performance of the NAFLD score.
| NAFLD score | ≤−1.455 | −1.454 −0.675 | ≥0.676 | All patients |
| All patients, n (%) | 101 (84) | 16 (13) | 3 (3) | 120 |
| F0–F2, n (%) | 97 (93) | 7 (7) | 0 | 104 |
| F3–F4, n (%) | 4 (25) | 9 (56) | 3 (19) | 16 |
| Sensitivity, % | 75 | 19 | ||
| Specifity, % | 93 | 100 | ||
| PPV, % | 63 | 100 | ||
| NPV, % | 96 | 89 | ||
| Likelihood-Ratio (+) | 11.2 | ∞ | ||
| Likelihood-Ratio (−) | 0.27 | 0.81 | ||
| Diagnostic accuracy 0.83 | ||||
| AUC (95% CI) 0.96 (0.92; 0.99) | ||||
Cut-off values and the classification of patients on the basis of the NAFLD fibrosis score (n = 120). A patient with a value below the lower cut-off level was classified as healthy (no advanced fibrosis), with a value above the upper cut-off level as morbid (advanced fibrosis). Patients with values between the cut-off levels are intermediate/not classifiable.