viraferonpeg (1 5 mikrogramov/ kg) + ribavirin (800 mg) viraferonpeg (1 5 to 0 5 mikrogram/ kg) + ribavirin (1 000/ 1 200 mg) interferon alfa 2b (3 mio i e) + ribavirin (1 000/ 1 200 mg) p < 0 001 p 1 5 proti i p = 0 0143 p 1 5/ r proti i/ r