Interferon β-1a alone or in combination with ribavirin: A randomized trial to compare efficacy and safety in chronic hepatitis C

Table 4 Rate (number responding/total treated) of patients with negative viremia after the 24-wk post-therapy follow-up according to viral load (cut-off 800 000 IU)

	Low	High	Not determined
r-hIFN β-1a	33.30%	4.80%
	(9/27)	(1/21)	(1/3)
r-hIFN β-1a + ribavirin	34.80%	16.60%
	(8/23)	(4/24)	(2/4)

Between group difference, P = 0.2972.