Figure 1.

Study design for the long-term glatiramer acetate (GA) study of patients who participated in the placebo-controlled study and were entered into the open-label study of GA. Patients on placebo in the placebo-controlled phase were switched to active treatment with GA in the open-label phase and those on GA in the placebo-controlled phase continued on it. The mean number of years of GA treatment for the Ongoing cohort was 13.6 years, for the mITT cohort was 8.6 years and for the Withdrawn cohort was 4.8 years.