Table 1.
Participant characteristics
| Whole sample (n=11,878) |
Subsample (n=2,794) | ||||
|---|---|---|---|---|---|
| Variable | Mean | SD | Mean | SD | p |
| Age (months) | |||||
| Baseline | 119 | 7.5 | 119 | 7.0 | 0.741 |
| Y2 | 143.5 | 7.6 | 142.8 | 7.0 | <0.001 |
| Puberty | |||||
| Baseline | 2 | 0.8 | 1.9 | 0.8 | <0.001 |
| Y2 | 2.7 | 1 | 2.6 | 1 | <0.001 |
| BMI | |||||
| Baseline | 18.8 | 3.8 | 17.0 | 1.4 | <0.001 |
| Y2 | 20.6 | 4.6 | 18.7 | 2.1 | <0.001 |
| n | % | n | % | ||
| Sex | |||||
| Male | 6192 | 52.1 | 1425 | 51.0 | 0.390 |
| Female | 5683 | 47.8 | 1369 | 49.0 | |
| Missing | 3 | ||||
| Race | |||||
| White | 7524 | 64.3 | 2032 | 72.7 | <0.001 |
| Black | 1869 | 16 | 277 | 9.9 | |
| Asian | 275 | 2.3 | 75 | 2.7 | |
| AIAN/NHPI | 78 | 0.7 | 22 | 0.8 | |
| Other | 525 | 4.5 | 96 | 3.4 | |
| Multi-race | 1434 | 12.3 | 277 | 10.5 | |
| Ethnicity | |||||
| Hispanic | 2411 | 20.6 | 414 | 14.8 | <0.001 |
| Non-Hispanic | 9312 | 79.4 | 2380 | 85.2 | |
| Caregiver report of education | |||||
| <HS | 568 | 4.8 | 76 | 2.7 | <0.001 |
| HS/GED | 1079 | 9.1 | 143 | 5.1 | |
| Some College | 2978 | 25.1 | 592 | 21.2 | |
| BA degree | 2969 | 25 | 803 | 28.7 | |
| Postgraduate degree | 3987 | 33.6 | 1180 | 42.2 | |
| Missing | 295 | 2.5 | |||
| Baseline Weight Class | |||||
| Underweight | 468 | 3.9 | |||
| Healthy Weight | 7601 | 64.0 | 2794 | 100 | <0.001 |
| Overweight | 1801 | 15.2 | |||
| Obese | 1992 | 16.8 | |||
| Missing | 16 | 0.1 | |||
| Y2 Weight Class | |||||
| Underweight | 286 | 2.7 | |||
| Healthy Weight | 4818 | 46.3 | 2448 | 87.6 | <0.001 |
| Overweight | 1216 | 11.7 | 323 | 11.6 | |
| Obese | 1381 | 13.3 | 23 | 0.8 | |
| Missing | 2714 | 26.1 | |||
Note. Participant characteristics are displayed for the largest possible N. Thus, the participant characteristics may differ slightly for those youth who were included in each analysis. Y2 = year 2 follow-up; BMI = body mass index; AIAN/NHPI = American Indian, Alaska Native/Native Hawaiian, Pacific Islander; HS = high school; GED = Generalized Education Degree; BA = bachelor’s degree. Descriptive statistics are displayed by caregiver self-reported race only for interpretation of sample diversity. P-values reflect chi-squared and t-tests were appropriate.