Table 1. Demographic and Clinical Characteristics at Enrollment.
| Characteristic | No. (%) | ||
|---|---|---|---|
| Early (n = 176)a | Delayed (n = 178)b | All patients (n = 354) | |
| Age, mean (IQR), d | 14 (6-28) | 17 (7-37) | 15 (7-32) |
| Girls | 74 (42.0) | 79 (44.4) | 153 (43.2) |
| Boys | 102 (60.0) | 99 (55.6) | 201 (56.8)c |
| Race | |||
| Asian | 7 (4) | 12 (6.8) | 19 (5.4) |
| Black | 26 (14.8) | 21 (11.8) | 47 (13.3) |
| White | 125 (71.0) | 125 (70.2) | 250 (70.6) |
| Otherd | 18 (10.2) | 20 (11.2) | 38 (10.7) |
| Ethnicity | |||
| Latino or Hispanic | 47 (26.7) | 34 (19.1) | 81 (22.9) |
| Not Latino or Hispanic | 128 (72.7) | 141 (79.2) | 269 (76.0) |
| Unknown | 1 (0.6) | 3 (1.7) | 4 (1.1) |
| Family composition for testing | |||
| Trio | 130 (73.9) | 139 (78.1) | 269 (76.0) |
| Duo | 41 (23.3) | 35 (19.7) | 76 (21.5) |
| Quad | 4 (2.3) | 3 (1.7) | 7 (2.0) |
| Indication for testing | |||
| Congenital anomalies | |||
| Multiple | 109 (61.9) | 92 (51.7) | 201 (56.8) |
| Isolated major | 26 (14.8) | 36 (20.2) | 62 (17.5) |
| Neurologic disorder | 22 (12.5) | 30 (16.9) | 52 (14.7) |
| Single major feature | 18 (10.2) | 19 (10.7) | 37 (10.5) |
a
Results returned at visit 2, 15 days after enrollment.
b
Results returned at visit 3, 60 days after enrollment.
c
Includes a single patient with indeterminate sex.
d
Parents who selected “other” have indicated that they do not identify as Asian, Black, or White race.