Table 1.
Baseline sample characteristics overall and by baseline weight statusa,b (N = 2785)
| Body Mass Index Percentile (BMI%ile) | ||||||
|---|---|---|---|---|---|---|
| Overall | <5 | ≥5, <85 | ≥85, <95 | ≥95 | ||
| 1.51 % (0.004) | 59.27 % (0.02) | 18.87 % (0.01) | 20.35 % (0.01) | |||
| Age (years) | 16.27 (0.03) | 16.18 (0.19) | 16.27 (0.03) | 16.26 (0.04) | 16.27 (0.05) | |
| Family Affluence Scalec | 5.41 (0.11) | 5.75 (0.41) | 5.48 (0.11) | 5.32 (0.12) | 5.22 (0.13) | |
| Race/ethnicity (%) | ||||||
| Non-Hispanic White | 55.70 (5.92) | 64.37 (14.60) | 58.12 (6.23) | 56.61 (6.51) | 47.16 (6.26) | |
| Non-Hispanic Black | 20.29 (4.43) | 16.60 (9.76) | 19.27 (4.45) | 17.73 (5.15) | 25.41 (4.57) | |
| Hispanic | 19.29 (3.71) | 17.55 (9.63) | 17.57 (3.86) | 19.50 (5.70) | 24.25 (4.15) | |
| Other | 4.82 (1.00) | 1.48 (1.33) | 5.05 (0.77) | 6.16 (3.10) | 3.18 (1.10) | |
| Sex (%) | ||||||
| Male | 45.48 (1.63) | 80.34 (8.42) | 43.30 (1.65) | 43.86 (4.93) | 50.77 (3.11) | |
| Female | 54.52 (1.63) | 19.66 (8.42) | 56.70 (1.65) | 56.14 (4.93) | 49.23 (3.11) | |
| Parent education (%) | ||||||
| < High School | 8.68 (2.06) | 15.12 (7.88) | 7.91 (1.94) | 7.46 (3.43) | 11.61 (2.44) | |
| High school graduate | 24.91 (2.96) | 12.51 (7.32) | 22.71 (2.46) | 27.51 (3.02) | 29.83 (3.70) | |
| Some college | 39.53 (1.74) | 35.80 (15.33) | 39.15 (2.29) | 38.33 (3.17) | 42.02 (2.97) | |
| Bachelor’s degree | 14.58 (1.56) | 31.79 (14.66) | 17.12 (1.94) | 10.27 (1.82) | 9.91 (1.82) | |
| Graduate degree | 12.30 (1.87) | 4.77 (2.79) | 13.12 (2.39) | 16.43 (3.38) | 6.64 (1.80) | |
| Urbanicity (%) | ||||||
| Urban | 17.36 (7.65) | 25.51 (12.56) | 17.58 (7.70) | 16.95 (7.66) | 16.52 (7.58) | |
| Suburban | 48.81 (9.80) | 50.36 (16.28) | 46.69 (10.00) | 53.86 (9.89) | 53.86 (10.19) | |
| Rural | 33.83 (7.41) | 24.12 (10.52) | 35.73 (8.05) | 33.16 (7.29) | 29.62 (7.02) | |
| Vigorous physical activity (hours/week) | 3.06 (0.11) | 2.38 (0.32) | 3.15 (0.12) | 3.11 (0.16) | 2.81 (0.17) | |
aWeight status calculated according to BMI%ile cut-offs: <5 underweight; ≥5, <85 normal weight; ≥85, <95 overweight; ≥95 obese
bValues are mean or % (SE)
cRanging from 0 (low affluence) to 7 (high affluence)