Table I.
Baseline characteristics of the cohort members according to inclusion in the conditional growth analyses
| Included in the conditional growth analyses | |||||
|---|---|---|---|---|---|
| Yes | No | P value | |||
| N | % | N | % | ||
| Sex | |||||
| Male | 1199 | 48.4 | 1839 | 53.5 | <.001 |
| Female | 1278 | 51.6 | 1598 | 46.5 | |
| Family income at birth(minimum wage) | <.001 | ||||
| ≤1 | 414 | 16.8 | 874 | 25.6 | |
| 1.1-3 | 1222 | 49.4 | 1567 | 45.9 | |
| 3.1-6 | 532 | 21.5 | 559 | 16.4 | |
| 6.1-10 | 165 | 6.7 | 217 | 6.4 | |
| >10 | 137 | 5.6 | 198 | 5.8 | |
| Maternal years of schooling | <.001 | ||||
| 0-4 | 704 | 28.4 | 1256 | 36.6 | |
| 5-8 | 1086 | 43.9 | 1368 | 39.9 | |
| 9-11 | 290 | 11.7 | 364 | 10.6 | |
| ≥12 | 395 | 16.0 | 444 | 12.9 | |
| Birthweight (g) | <.001 | ||||
| <2500 | 147 | 5.9 | 387 | 11.3 | |
| 2500-2999 | 579 | 23.4 | 814 | 23.7 | |
| 3000-3499 | 948 | 38.3 | 1272 | 37.1 | |
| ≥3500 | 803 | 32.4 | 959 | 27.9 | |
| Total* | 2477 | 3437 | |||
*
For some variables, the number of subjects might not sum to the subjects included or not in the conditional growth analysis because of missing information.