Fig. 3From: The clinical course of Duchenne muscular dystrophy in the corticosteroid treatment era: a systematic literature reviewOccurrence of other key clinical milestones: a Mean/median age at scoliosis; b Percentage with scoliosis over time; c Mean/median age at respiratory support; d Percentage on respiratory support over time; e Mean/median age at cardiomyopathy; f Percentage with cardiomyopathy over time. 6MWD = 6 min walk distance; PEF = peak expiratory flow; FVC = forced vital capacity; SF = shortening fraction; LVED = left ventricular end-diastolic dimension; EF = ejection fraction. Notes: **Scoliosis includes both severe scoliosis and spinal surgeryBack to article page