Table 1. Body mass index stratified by age and race and Hispanic origin, National Survey of Family Growth, 2002 *.
| All (20-44 y) | 20-29 y | 30-39 y | 40-44 y | |
|---|---|---|---|---|
| All | ||||
| Underweight | 2.3 (0.3) | 3.7 (0.6) | 1.5 (0.3) | † |
| Normal | 50.2 (1.1) | 56.6 (1.4) | 47.1 (1.4) | 45.9 (2.5) |
| Overweight | 24.5 (0.8) | 20.4 (1.2) | 26.5 (1.1) | 26.9 (1.8) |
| Class I obesity | 12.7 (0.7) | 11.8 (0.8) | 13.3 (0.8) | 12.8 (1.5) |
| Class II or III obesity | 10.3 (0.5) | 7.3 (0.6) | 11.5 (0.9) | 12.8 (1.5) |
| Non-Hispanic White | ||||
| Underweight | 2.1 (0.4) | 3.3 (0.7) | 1.5 (0.4) | † |
| Normal | 53.6 (1.3) | 59.7 (1.9) | 50.6 (1.9) | 50.4 (3.1) |
| Overweight | 22.8 (1.0) | 19.7 (1.7) | 23.4 (1.3) | 25.8 (2.3) |
| Class I obesity | 11.6 (0.8) | 10.9 (1.1) | 12.0 (1.1) | 11.9 (1.7) |
| Class II or III obesity | 9.8 (0.7) | 6.2 (0.8) | 12.4 (1.3) | 10.5 (1.5) |
| Non-Hispanic Black | ||||
| Underweight | 2.6 (0.7) | 3.9 (1.7) | † | † |
| Normal | 33.2 (1.7) | 44.6 (2.8) | 27.5 (2.2) | 24.3 (3.9) |
| Overweight | 30.0 (1.5) | 19.6 (2.2) | 38.3 (2.5) | 32.5 (3.6) |
| Class I obesity | 17.5 (1.3) | 19.4 (2.2) | 16.7 (2.0) | 15.5 (2.6) |
| Class II or III obesity | 16.6 (1.4) | 12.5 (1.8) | 16.0 (2.0) | 25.0 (4.2) |
| Non-Hispanic Other | ||||
| Underweight | 5.8 (2.3) | 11.8 (5.0) | † | † |
| Normal | 61.5 (5.4) | 63.2 (6.4) | 27.5 (2.2) | 53.6 (15.4) |
| Overweight | 17.4 (3.1) | 14.3 (3.4) | 38.3 (2.5) | † |
| Class I obesity | 9.0 (2.8) | † | 16.7 (2.0) | † |
| Class II or III obesity | 6.2 (2.7) | † | † | † |
| Hispanic | ||||
| Underweight | 1.8 (0.4) | 2.4 (0.8) | † | † |
| Normal | 46.3 (1.8) | 53.0 (3.0) | 43.0 (2.7) | 37.3 (4.3) |
| Overweight | 29.7 (1.9) | 26.1 (2.7) | 31.0 (2.9) | 35.2 (4.3) |
| Class I obesity | 14.2 (1.2) | 11.1 (1.4) | 17.9 (2.3) | 13.3 (3.0) |
| Class II or III obesity | 8.0 (1.1) | 7.3 (1.2) | 6.7 (1.3) | 12.5 (3.4) |
Values are weighted percentages (standard error). Underweight, < 18.5 kg/m2; normal, 18.5-24.9 kg/m2; overweight, 25.0-29.9 kg/m2; class I obesity, 30-34.9 kg/m2; class II or III obesity, ≥ 35.0 kg/m2.
*
Percentages may not sum to 100 due to rounding.
†
Unweighted frequency was less than 10.