Table 4.

(a) Number of patients according to baseline fibrosis stage and (b) accuracy of the FIB-4 index at baseline and after 1 year.

(a)
	Baseline		1 Year
	Stage 3,4	Stage 0–2	Stage 3,4	Stage 0–2
<1.30	8	75	11	100
≧1.30	38	151	35	126
≦2.67	17	147	26	186
>2.67	29	79	20	40
(b)
		Sensitivity	Specificity	PPV	NPV
Baseline	Low cut-off	82.6	33.2	20.1	90.4
	High cut-off	63.0	65.0	26.9	89.6
1 year	Low cut-off	76.9	44.2	21.7	90.1
	High cut-off	43.4	82.3	33.3	87.7

Abbreviations: PPV, positive predictive value; NPV, negative predictive value.