TABLE 1.
Patient Characteristics
| DMD Cohort (n = 75) | Matched Control Cohort (n = 750) | P Value | |||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Age (continuous), years | 13.11 | 6.88 | 13.11 | 6.84 | 1.000 |
| 0-3 | 4 | 5.33 | 40 | 5.33 | |
| 4-7 | 14 | 18.67 | 140 | 18.67 | |
| 8-13 | 23 | 30.67 | 230 | 30.67 | |
| 14-17 | 20 | 26.67 | 200 | 26.67 | |
| 18-29 | 14 | 18.67 | 140 | 18.67 | |
| Male | 75 | 100.00 | 750 | 100.00 | 1.000 |
| Geographic region | 1.000 | ||||
| Northeast | 3 | 4.00 | 30 | 4.00 | |
| Midwest | 26 | 34.67 | 260 | 34.67 | |
| South | 32 | 42.67 | 320 | 42.67 | |
| West | 14 | 18.67 | 140 | 18.67 | |
| Provider specialty on index date | |||||
| Primary care/family practice/pediatrics/internal medicine | 7 | 9.33 | 519 | 69.2 | < 0.001 |
| Neurology | 15 | 20.00 | 4 | 0.53 | < 0.001 |
| Cardiology | 0 | 0.00 | 1 | 0.13 | 0.752 |
| Hospital/other/unknown | 53 | 70.67 | 226 | 30.14 | < 0.001 |
| Number of days follow-up (mean, SD) | 1,071.83 | 794.80 | 888.51 | 549.95 | 0.054 |
SD = standard deviation.