Combined acoustic radiation force impulse, aminotransferase to platelet ratio index and Forns index assessment for hepatic fibrosis grading in hepatitis B

Table 4 Binary logistic regression of two variables in hepatic fibrosis ≥ F2

Combination	Variable	RC	SD of RC	Wald	P value	OR	95%CI of OR
ARFI + APRI	ARFI	9.11	1.48	37.68	< 0.001	9085.54	494.92-166789.07
	APRI	5.03	1.30	15.07	< 0.001	153.01	12.07-1939.04
	Constant	-13.27	1.95	46.09	< 0.001	-	-
ARFI + Forns index	ARFI	8.67	1.44	36.16	< 0.001	5824.00	345.12-98280.97
	Forns index	0.70	0.17	16.27	< 0.001	2.01	1.43-2.82
	Constant	-15.08	2.08	52.68	< 0.001	-	-

ARFI: Acoustic radiation force impulse; APRI: Aspartate aminotransferase to platelet ratio index; OR: Odds ratio; RC: Regression coefficient.