Table 3.

Changes in liver stiffness before and after propensity score matching (PS1).

	Before PS matching			After PS matching
Outcome	IFN (n = 92)	DAA (n = 82)	p value	IFN (n = 42)	DAA (n = 42)	p value
Change of LS value† at 48 W, kPa (%)	0.62 ± 1.39 (8%)	5.78 ± 7.69 (27%)	< 0.0001	0.75 ± 1.68 (9%)	5.74 ± 8.53 (29%)	< 0.0001
Change of LS value at 96 W, kPa (%)	1.46 ± 2.79 (15%)	7.92 ± 8.28 (37%)	< 0.0001	1.55 ± 2.85 (17%)	7.11 ± 8.44 (39%)	0.0001
Significant regression‡ at 48 W	5 (5.5)	40 (48.8)	< 0.0001	3 (7.1)	23 (54.8)	< 0.0001
Significant regression at 96 W	12 (13.2)	52 (63.4)	< 0.0001	5 (15.6)	27 (64.3)	< 0.0001

^†Changes of LS value are described as subtracted change from baseline LS (percentage change).

^‡Significant regression was defined as more than 30% reduction of liver stiffness from baseline.

PS, propensity matching; IFN, interferon; DAA, direct antiviral agents; LS, liver stiffness; W, week.