TABLE 1.
Cohort Description by Race and Parental Education
| Parameter | All | Black | White | Less Than College |
College or More |
|---|---|---|---|---|---|
| n | 739 | 225 | 514 | 299 | 440 |
| Male, n (%) | 345 (47) | 104 (46) | 241 (47) | 139 (46) | 206 (47) |
| Age, mean ± SD, y | 14.1 ± 2.1 | 13.9 ± 2.1 | 14.2 ± 2.1 | 13.9 ± 2.1 | 14.3 ± 2.1a |
| Puberty, n (%) | |||||
| Prepubertal | 95 (13) | 25 (11) | 70 (14) | 48 (16) | 47 (11) |
| Pubertal | 304 (41) | 90 (40) | 214 (42) | 124 (42) | 180 (41) |
| Postpubertal | 338 (46) | 109 (49) | 229 (45) | 126 (42) | 212 (48) |
| Premature, n (%) | 59 (8) | 30 (13) | 29 (6)b | 25 (8) | 34 (8) |
| Birth weight, mean ± SD, kg | 3.4 ± 0.6 | 3.2 ± 0.6 | 3.5 ± 0.5b | 3.4 ± 0.6 | 3.4 ± 0.5 |
| Black, n (%) | 225 (30) | — | — | 132 (44) | 93 (21)b |
| Parental Education, n (%) | |||||
| Less than college degree | 299 (40) | 142 (59) | 167 (32)b | — | — |
| College degree or more | 440 (60) | 93 (41) | 347 (68) | — | — |
| Breastfeeding behavior, n (%) | |||||
| Never or≤4 mo | 508 (69) | 201 (89) | 307 (60)b | 245 (82) | 263 (60)b |
| >4 mo | 231 (31) | 24 (11) | 207 (40) | 54 (18) | 177 (40) |
| Adolescent adiposity | |||||
| BMI≥85th percentile, n (%) | 269 (36) | 109 (48) | 160 (31)b | 141 (47) | 128 (29)b |
| BMI≥95th percentile, n (%) | 123 (17) | 58 (26) | 65 (13)b | 75 (25) | 48 (11)b |
| BMI z score (mean ± SD) | 0.64 ± 1.00 | 0.95 ± 1.00 | 0.51 ± 1.00b | 0.85 ± 1.10 | 0.51 ± 0.90b |
a
P<.05 by t test.
b
P<.001 by χ2 test.