Table 1.
Weighted obesity prevalencea [% (SE)] (Waves II and III)b
| MALES | FEMALES | |||
| Wave II | Wave III | Wave II | Wave III | |
| Count | 4879 | 4879 | 4276 | 4276 |
| Total Sample | 11.5 (0.73) | 21.1 (0.94) | 10.9 (0.74) | 23.9 (1.18) |
| Parental Education | ||||
| < HS | 12.0 (1.88)* | 22.6 (2.57) | 16.3 (1.87)** | 37.0 (3.02)** |
| HS/GED | 13.9 (1.36)* | 23.2 (1.72) | 11.8 (1.27)** | 26.5 (1.84)** |
| Some College | 11.7 (1.26)* | 20.7 (1.31) | 9.2 (1.06)** | 22.0 (1.60)** |
| College/Grad | 8.2 (1.07)* | 18.3 (1.58) | 8.6 (1.48)** | 15.9 (1.77)** |
| Income Tertile | ||||
| 1st Tertile | 13.8 (1.41)* | 23.2 (1.74)** | 13.3 (1.22)** | 30.2 (2.12)** |
| 2nd Tertile | 11.6 (0.94)* | 22.5 (1.36)** | 11.7 (1.09)** | 25.1 (1.56)** |
| 3rd Tertile | 9.2 (1.00)* | 17.3 (1.39)** | 7.7 (1.19)** | 16.9 (1.44)** |
| Race | ||||
| White | 11.4 (0.92) | 20.4 (1.15) | 10.0 (0.91)** | 21.7 (1.31)** |
| Black | 12.1 (1.58) | 23.6 (2.13) | 16.8 (1.68)** | 35.8 (3.02)** |
| Native American | 21.5 (10.33) | 40.9 (20.19) | 17.0 (6.63)** | 42.2 (11.89)** |
| Asian | 6.4 (2.38) | 18.5 (3.76) | 2.6 (1.25)** | 9.0 (2.96)** |
| Hispanic | 12.4 (1.89) | 21.4 (2.18) | 12.5 (1.70)** | 28.6 (2.40)** |
| Region | ||||
| West | 10.0 (1.57) | 20.4 (2.71) | 7.9 (1.27) | 21.6 (2.08)* |
| Mid-West | 11.9 (1.48) | 21.6 (1.80) | 12.0 (1.49) | 23.5 (2.51)* |
| South | 12.7 (1.18) | 22.4 (1.51) | 11.9 (1.12) | 28.1 (1.84)* |
| Northeast | 8.7 (1.21) | 17.1 (1.71) | 8.4 (1.81) | 17.0 (2.30)* |
| Smoking | ||||
| Never | 11.3 (0.76) | 21.9 (1.29) | 10.3 (0.77) | 22.9 (1.46) |
| Formerc | 14.3 (2.64) | 18.8 (1.67) | 10.9 (1.64) | 26.9 (2.31) |
| Current | 11.3 (1.70) | 21.2 (1.50) | 13.4 (1.57) | 24.2 (1.94) |
| Season | ||||
| Winter | --d | 18.8 (1.52) | --d | 21.9 (2.28) |
| Spring | 12.9 (1.02)** | 20.5 (2.04) | 11.4 (1.00) | 22.0 (3.18) |
| Summer | 9.8 (0.84)** | 21.9 (2.44) | 10.1 (1.00) | 26.5 (2.12) |
| Fall | --e | 22.5 (1.27) | --e | 24.5 (1.26) |
* p < 0.05 within wave and sex; ** p < 0.01 within wave and sex
a Obesity defined as BMI ≥ 30 kg/m2 equivalent age- and sex-specific IOTF cut-points at Wave II; BMI ≥ 30 kg/m2 at Wave III.
b National Longitudinal Study of Adolescent Health [N = 9,155]. Weighted for national representation, standard errors corrected for survey design effects of multiple stage cluster sampling.
c Combined with "Current" in regression modeling for Wave II
d Variable is not applicable for Wave II
e Insufficient cell size; combined with Summer for Wave II