Table 1.

Overview of the diagnostic pathway in Duchenne muscular dystrophy (DMD) for boys diagnosed in Newcastle

(n=20)	First symptoms	First presentation to a health professional	CK test	Diagnosis DMD
Mean age in months (years)	32.5 (2.7)	42.9 (3.6)	50.1 (4.2)	51.7 (4.3)
Range in months	8–72	10–90	14–91	10–91

Mean age (in months and years) at each step in the pathway for boys with DMD without a family history of the condition.

CK, creatine kinase.