Table 1 Descriptive Statistics across the whole sample and by school SEC
Variables | All | Â | School SEC | Â |
|---|---|---|---|---|
Low (n = 3) | Medium (n = 5) | High (n = 3) | ||
Age (M, SD) | 15.92 (1.33) | 16.61 (1.16) | 15.37 (1.24) | 15.82 (1.26) |
Sex (n, %) | ||||
 Boys | 515 (49.6%) | 186 (53.6%) | 195 (51.6%) | 142 (45.4%) |
 Girls | 523 (50.4%) | 161 (46.4%) | 183 (48.4%) | 171 (54.6%) |
Body Mass Index | ||||
 Weight / Height (M, SD) | 20.83 (3.32) | 21.97 (3.8) | 20.59 (3.09) | 19.85 (2.57) |
 CDC Z-Scores (M, SD) | −0.09 (1.01) | 0.11 (1.05) | −0.04 (0.97) | −0.37 (0.94) |
 Underweight | 65 (6.3%) | 16 (4.6%) | 22 (5.8%) | 27 (8.6%) |
 Normal Weight | 846 (81.5%) | 274 (79.0%) | 308 (81.5%) | 264 (84.3%) |
 Overweight | 92 (8.9%) | 38 (11.0%) | 36 (9.5%) | 18 (5.8%) |
 Obesity | 35 (3.4%) | 19 (5.5%) | 12 (3.2%) | 4 (1.3%) |
 Overweight|Obesity | 127 (12.2%) | 57 (16.4%) | 48 (12.7%) | 22 (7.0%) |
Physical Activity | ||||
 Low | 282 (27.2%) | 142 (40.9%) | 79 (20.9%) | 61 (19.5%) |
 Medium | 623 (60.0%) | 162 (46.7%) | 245 (64.8%) | 216 (69.0%) |
 High | 133 (12.8%) | 43 (12.4%) | 54 (14.3%) | 36 (11.5%) |
Adolescent SES | ||||
 Low | 351 (33.8%) | 214 (61.7%) | 108 (28.6%) | 29 (9.3%) |
 Medium | 277 (26.7%) | 63 (18.2%) | 118 (31.2%) | 96 (30.7%) |
 High | 368 (35.5%) | 50 (14.4%) | 137 (36.2%) | 181 (57.8%) |
 NA | 42 (4.1%) | 20 (5.8%) | 15 (4.0%) | 7 (2.2%) |
School Lunch (n, %) | ||||
 Lunch outside school | 490 (47.2%) | 304 (87.6%) | 189 (50.0%) | 55 (17.6%) |
 Lunch at school | 548 (52.8%) | 43 (12.4%) | 189 (50.0%) | 258 (82.4%) |
Household Composition | ||||
 Live with both parents | 680 (65.5%) | 218 (62.8%) | 231 (61.1%) | 231 (73.8%) |
 Do not live with both parents | 358 (34.5%) | 129 (37.2%) | 147 (38.9%) | 82 (26.2%) |
 Number of Siblings (M, SD) | 2.13 (1.55) | 2.9 (1.76) | 1.92 (1.45) | 1.54 (0.98) |
Overall | 1038 (100.0%) | 347 (100.0%) | 378 (100.0%) | 313 (100.0%) |