Fig. 2From: Reasons for discontinuation of subcutaneous interferon β-1a three times a week among patients with multiple sclerosis: a real-world cohort studyKaplan-Meier curves of probability of sc IFN β-1a tiw continuation by follow-up time in days. a Data are truncated at 1 year from the index date. Kaplan-Meier curves are stratified by the presence of one or more relapses (red line) or no relapses (blue line). 3975 patients were included in the analysis; 3461 patients had two or more sc IFN β-1a tiw claims during this period. b Data are truncated at 2 years from the index date. Kaplan-Meier curves are stratified by the presence of one or more relapses (red line) or no relapses (blue line). 2592 patients were included in the analysis; 2280 patients had two or more sc IFN β-1a tiw claims during this period. c Data are truncated at 3 years from the index date. Kaplan-Meier curves are stratified by the presence of one or more relapses (red line) or no relapses (blue line). 1664 patients were included in the analysis; 1482 patients had two or more sc IFN β-1a tiw claims during this periodBack to article page