Over 2 år var risikon i placebogruppen 85% og 69% i Betaferon- gruppen (hazard- ratio = 0, 57, 95% konfidensinterval (0, 46, 0, 71), p < 0, 00001).
In two years, the risk in the placebo group was 85% and 69% in the Betaferon group (Hazard Ratio = 0.57, 95% confidence interval (0.46, 0.71), p < 0.00001).