Baseline characteristics |  | Excluded (n = 242*) n (%) | Included (n = 673) n (%) | Difference in proportion between excluded versus included categories** |
---|---|---|---|---|
Gender | Males | 149 (31.1) | 330 (68.9) | X2 = 11.21 (p = 0.001) |
Females | 93 (21.0) | 343 (79.0) | ||
Ethnicity | White | 217 (25.7) | 629 (74.3) | X2 = 3.67 (p = 0.06) |
Other | 25 (36.0) | 44 (64.0) | ||
FAS | Low and medium (0–5) | 121 (25.5) | 353 (74.5) | X2 = 2.09 (p = 0.15) |
High (6–9) | 87 (21.4) | 320 (87.6) | ||
Study school | 1 | 40 (22.0) | 142 (78.0) | X2 = 78.04 (p < 0.001) |
2 | 58 (33.3) | 116 (66.7) | ||
3 | 31 (18.8) | 134 (81.2) | ||
4 | 15 (15.6) | 81 (84.4) | ||
5 | 28 (16.5) | 142 (83.5) | ||
6 | 70 (54.7) | 58 (45.3) | ||
Physical activity*** | Volume (mean counts per minute) | 482.78 (158.12) | 508.28 (169.42) | −25.5 (95% CI −58.02 to 7.02) p = 0.12 |
MVPA (mean daily MVPA minutes) | 51.90 (21.66) | 55.59 (21.47) | −3.69 (95% CI −7.86 to 0.48) p = 0.08 |