Table 6. Bayley-III Motor assessment of infants and young boys with DMD.

One infant was not able to complete the fine motor testing and therefore the Motor composite score (which combines both Fine and Gross motor Scaled scores) is also calculated with n=24.

Subtest	Normal	DMD	t test and p value
Fine Motor Scaled Score (n=23)	10±3	7.9 ±1.9 (3–11)	t=−4.4 (p=.0001)
Gross Motor Scaled Score (n=24)	10±3	6.1 ± 1.5 (3–10)	t=−9.8 (p=<.0001)
Motor Composite Score (n=23)	100±15	82.2 ±8.4 (58–103)	t=−7.60 (p=<.0001)