Research Article
Diagnostic Accuracy of Platelet Count and Platelet Indices in Noninvasive Assessment of Fibrosis in Nonalcoholic Fatty Liver Disease Patients
Table 2
Formulas for calculating noninvasive scores for fibrosis [
12,
13].
| Noninvasive index of fibrosis | Formula |
| NFS | 1.675 + 0.037 × age (years) + 0.094 × BMI (kg/m2) + 1.13 × IFG/diabetes (yes = 1, no = 0) + 0.99 × AST/ALT ratio − 0.013 × platelet (×109/l) − 0.66 × albumin (g/dl) | APRI | [(AST/upper normal limit AST ) × 100]/platelets (109/L) | FIB-4 | (Age × AST)/(platelets × sqr (ALT)) | BARD | BMI ≥ 28 = 1p, AST/ALT ratio (AAR) ≥ 0.8 = 2p, DM = 1p |
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NFS: NAFLD fibrosis score; APRI: AST platelet ratio index; FIB-4: fibrosis-4; BARD: BMI, AST/ALT ratio, and diabetes [12, 13].
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