Fig. 4
From: Natural history of Type 1 spinal muscular atrophy: a retrospective, global, multicenter study
Landmark comparison of time to death or permanent ventilation: ANCHOVY and FIREFISH Part 2. Kaplan–Meier curves are shown for FIREFISH (n = 41; solid black) and ANCHOVY (n = 40; solid blue). To compensate for the differences in age at the start of the risk period in the FIREFISH Part 2 and ANCHOVY studies, the landmark (dotted red vertical line) was set at the youngest age that a patient had an event in the FIREFISH Part 2 study, which was at an age of 6.1 months (186 days). ANCHOVY patients who had events before this time point are excluded. CI, confidence interval