Table I.
Child and Mother Participant Characteristics
| Analyses | Child Participants | % Male | % White | % in Wheelchair | Child Age, years M±SD | PPVT SS M±SD | PSI-SF Total M±SD | Mother Age, years M±SD | Mother Modal Education |
|---|---|---|---|---|---|---|---|---|---|
| DMD | 127 boys with DMD | 100.0 | 87.4 | 45.7 | 9.61±2.87 | 100.01±22.08 | 81.22±20.18 | 38.16±5.49 | HSG |
| DMD vs. CP | 112 boys with DMD | 100.0 | 86.6 | 45.5 | 9.43±2.81 | 99.04±22.58 | 81.28±20.18 | 37.75±5.43 | HSG |
| 28 children with CP | 52.4 | 53.6 | 0.0 | 6.43±0.63 | 92.93±17.51 | 65.49±20.83 | 36.75±5.61 | HSG | |
| DMD vs. siblings | 46 boys with DMD | 100.0 | 90.0 | 32.0 | 8.85±2.41 | 99.47±20.53 | 87.33±19.59 | 37.90±5.30 | HSG |
| 46 healthy siblings | 43.5 | 90.0 | 0.0 | 10.07±3.2 | 109.94±17.39 | 79.93±17.87 | |||
| Longitudinal DMD | 16 boys with DMD (Time 1) |
100.0 | 81.3 | 18.8 | 7.87±1.41 | 102.38±17.07 | 86.88±12.31 | 34.21±4.63 | HSG |
| 16 boys with DMD (Time 2) |
68.8 | 9.94±1.44 | 81.13±21.86 | ||||||
| 16 boys with DMD (Time 3) |
87.5 | 12.81±1.56 | 80.81±12.91 |
PPVT SS = Peabody Picture Vocabulary Test Standard Score. PSI-SF Total = total score on the Parenting Stress Index–Short Form. DMD = Duchenne muscular dystrophy. CP = cerebral palsy. HSG = high school graduate.
For first DMD analyses, characteristics of all participants are described. For DMD vs. CP, DMD vs. siblings, and longitudinal DMD analyses, only characteristics of the nondefensive responders included in analyses are described.