Fig. 1From: The incidence of hydrocephalus among patients with and without spinal muscular atrophy (SMA): Results from a US electronic health records studyMatched cohort study design of the incidence of hydrocephalus among SMA cases and non-SMA controls. EHR electronic health record, SMA spinal muscular atrophy. aNon-SMA matched controls matched to SMA cases on birth year, sex, and index dateBack to article page