| 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 | Â | Â | Â | Â |
   < 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 | Â | Â | Â | Â |
   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 | Â | Â | Â | Â |
   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 | Â | Â | Â | Â |
   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 | Â | Â | Â | Â |
   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 | Â | Â | Â | Â |
   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) |