Table 1.

Demographic and baseline characteristics (full analysis set).

Parameter, years, mean (SD)	Total (N = 101)
Age, years	9.1 (3.5)
Years since first motor symptom of DMD to study enrollmenta,b	6.2 (3.6)
Years since diagnosis of DMD to study enrollmentb,c	5.5 (3.5)
Years since the confirmatory genetic testing to study enrollmentb	5.3 (3.5)
Parameter, n (%)
Male	101 (100)
Race
White	79 (78.2)
Other	22 (21.8)

DMD, Duchenne muscular dystrophy; SD, standard deviation.

^an = 94.

^bYears are calculated as (date of informed consent minus date of the first motor symptom of DMD/DMD diagnosis/the confirmatory genetic testing for DMD)/365.25.

^cn = 99.