Liver fibrosis evaluation by ARFI and APRI in chronic hepatitis C

Table 1 Comparison of acoustic radiation force impulse and AST/PLT ratio Index in different stages of liver fibrosis

Stages of liver fibrosis	Cases number	ARFI (m/s)	APRI
S1	41	1.23 ± 0.34	0.31 ± 0.45
S2	40	1.48 ± 0.43	0.28 ± 0.38
S3	30	2.06 ± 0.45ac	0.58 ± 0.59ac
S4	17	2.30 ± 0.87ac	0.65 ± 0.34ac
F value		1.536	1.268
P value		0.026	0.038

^aP < 0.05 vs S1;

^cP < 0.05 vs S2. ARFI: Acoustic radiation force impulse; APRI: AST/PLT ratio index.