Table 1.
Descriptive information for the Add Health analytic sample, by race/ethnicity and in the total sample
| European Americans (N=5,962) | African Americans (N=2,080) | Hispanic Americans (N=1,582) | Total Sample (N=9,624) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Females | Males | Females | Males | Females | Males | Females | Males | |||||||||
| Variable | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % | N | Mean (SD) / % |
| Age in Wave II, years | 2,532 | 15.94 (1.6) | 2,304 | 16.24 (1.63) | 882 | 16.08 (1.63) | 744 | 16.21 (1.67) | 624 | 16.35 (1.66) | 625 | 16.49 (1.60) | 4,038 | 16.03 (1.62) | 3,673 | 16.27 (1.64) |
| Age in Wave III, years | 2,746 | 21.69 (1.77) | 2,445 | 21.95 (1.76) | 991 | 21.74 (1.71) | 797 | 21.96 (1.84) | 670 | 22.15 (1.74) | 679 | 22.27 (1.76) | 4,407 | 21.77 (1.76) | 3,921 | 22.01 (1.78) |
| Age in Wave IV, years | 2,987 | 28.18 (1.76) | 2,831 | 28.43 (1.75) | 1,103 | 28.29 (1.75) | 929 | 28.44 (1.83) | 766 | 28.64 (1.75) | 783 | 28.78 (1.72) | 4,856 | 28.28 (1.76) | 4,543 | 28.49 (1.77) |
| BMI in Wave II, kg/m2 | 2,532 | 22.66 (4.9) | 2,304 | 23.09 (4.76) | 882 | 24.45 (6.03) | 744 | 23.51 (5.07) | 624 | 23.57 (5.32) | 625 | 24.08 (5.10) | 4,038 | 23.19 (5.29) | 3,673 | 23.34 (4.90) |
| BMI in Wave III, kg/m2 | 2,746 | 25.96 (6.43) | 2,445 | 26.28 (5.48) | 991 | 28.4 (7.68) | 797 | 26.61 (6.01) | 670 | 27.14 (6.47) | 679 | 27.42 (5.55) | 4,407 | 26.69 (6.81) | 3,921 | 26.55 (5.62) |
| BMI in Wave IV, kg/m2 | 2,987 | 28.3 (7.74) | 2,831 | 28.66 (6.41) | 1,103 | 31.83 (9.11) | 929 | 29.01 (7.13) | 766 | 29.58 (7.73) | 783 | 30.23 (6.67) | 4,856 | 29.30 (8.20) | 4,543 | 29.00 (6.63) |
|
One year change (slope) in BMI, kg/m2 |
3,131 | 0.44 (0.26) | 2,831 | 0.46 (0.17) | 1,145 | 0.61 (0.28) | 935 | 0.45 (0.24) | 797 | 0.47 (0.24) | 785 | 0.51 (0.22) | 5,073 | 0.48 (0.27) | 4,551 | 0.46 (0.20) |
| Region, N (%) | ||||||||||||||||
| West | 484 | 15.46 | 411 | 14.52 | 158 | 13.8 | 140 | 14.97 | 342 | 42.91 | 305 | 38.85 | 984 | 19.4 | 856 | 18.8 |
| Midwest | 1,142 | 36.47 | 1,032 | 36.45 | 215 | 18.78 | 172 | 18.4 | 59 | 7.4 | 58 | 7.39 | 1416 | 27.9 | 1,262 | 27.7 |
| South | 1,026 | 32.77 | 976 | 34.48 | 700 | 61.14 | 575 | 61.5 | 300 | 37.64 | 310 | 39.49 | 2026 | 39.9 | 1,861 | 40.9 |
| Northeast | 479 | 15.3 | 412 | 14.55 | 72 | 6.29 | 48 | 5.13 | 96 | 12.05 | 112 | 14.27 | 647 | 12.8 | 572 | 12.6 |
Abbreviations: BMI (body mass index), SD (standard deviation)