Table 3 Area under the receiver operating characteristic curves (95% confidence interval) of the indexes validated in human immunodeficiency virus/hepatitis C virus coinfected patients by liver biopsy length.

Biopsy length (mm)	n	Models aimed at discriminating significant fibrosis		Models aimed at discriminating cirrhosis
		Forns8	APRI9	APRI9	Bonacini10	ALT/AST	Platelets
⩾10	357	0.71 (0.66–0.76)	0.73 (0.66–0.78)	0.77 (0.69–0.85)	0.69 (0.61–0.77)	0.60 (0.50–0.69)	0.79 (0.72–0.86)
⩾15	263	0.77 (0.71–0.83)	0.80 (0.75–0.86)	0.79 (0.71–0.87)	0.71 (0.63–0.79)	0.60 (0.50–0.69)	0.79 (0.72–0.86)
⩾20	146	0.76 (0.70–0.85)	0.80 (0.73–0.88)	0.80 (0.74–0.88)	0.73 (0.66–0.80)	0.62 (0.50–0.70)	0.80 (0.73–0.87)

AST, aspartate aminotransferase; ALT, alanine aminotransferase; APRI, AST platelet ratio index.