NFS is calculated as 1.675 + 0.0373 × age (years) + 0.0943 BMI (kg/m2) + 1.133 × impaired fasting glycaemia or diabetes (yes = 1, no = 0) + 0.993 × AST/ALT ratio − 0.0133 × platelet (×109/L) − 0.663 × albumin (g/dL) [12]. Here, GPT is linked to diabetes mellitus.