Table 1 Characteristics of participants included in analytic sample
| Â | 24 months | 36 months | 54 months | 1st grade | 3rd grade | 5th grade | 6th grade |
|---|---|---|---|---|---|---|---|
na | 990 | 1055 | 1004 | 967 | 903 | 890 | 881 |
Mean age, years (SD) | 2.1 (0.1) | 3.1 (0.1) | 4.7 (0.1) | 7.0 (0.3) | 9.0 (0.3) | 11.0 (0.3) | 11.9 (0.3) |
Male, % | 49.5% | 50.5% | 49.8% | 49.8% | 49.2% | 50.3% | 49.1% |
White, % | 82.0% | 82.0% | 82.8% | 82.0% | 81.9% | 81.2% | 81.5% |
Mean height, cm (SD) | 86.8 (3.2) | 95.3 (3.5) | 106.9 (4.3) | 122.5 (5.4) | 135.1 (6.3) | 147.1 (7.3) | 153.0 (7.6) |
Mean weight, kg (SD) | 12.7 (1.5) | 14.7 (1.8) | 18.4 (2.6) | 25.4 (5.2) | 34.0 (9.0) | 44.0 (13.1) | 49.2 (14.3) |
Mean BMI (SD) | 16.8 (1.4) | 16.2 (1.4) | 16.1 (1.6) | 16.8 (2.6) | 18.4 (3.8) | 20.1 (4.8) | 20.8 (4.9) |
Obesityb, % | 5.6% | 5.9% | 9.4% | 11.9% | 16.8% | 19.2% | 18.3% |