Table 1.
Year 3 (2014/2015) descriptive statistics among grade 9–12 students with 2-year linked data for Year 3 (2014/2015) and Year 4 (2015/2016) in the COMPASS study.
| Female (n = 9225) | Male (n = 8655) | Chi-square | ||
|---|---|---|---|---|
| % (n)b | % (n)b | p value | ||
| Grade | 9 | 35.7 (3295) | 38.0 (3286) | <0.0001 |
| 10 | 34.8 (3209) | 34.5 (2989) | ||
| 11 | 28.2 (2601) | 25.6 (2214) | ||
| 12 | 1.3 (120) | 1.9 (166) | ||
|
| ||||
| Ethnicity | White | 72.6 (6698) | 68.3 (5911) | <0.0001 |
| Nonwhite | 27.4 (2527) | 31.7 (2744) | ||
|
| ||||
| BMI classificationa | Underweight | 1.3 (117) | 1.6 (135) | <0.0001 |
| Normal weight | 59.5 (5492) | 51.9 (4490) | ||
| Overweight/obesity | 15.0 (1383) | 25.6 (2217) | ||
| Missing BMI | 24.2 (2233) | 20.9 (1813) | ||
|
| ||||
| WP | Underweight | 11.0 (1006) | 21.9 (1864) | <0.0001 |
| “About right” | 57.5 (5237) | 55.9 (4767) | ||
| Overweight | 31.5 (2872) | 22.2 (1897) | ||
|
| ||||
| PA | ||||
| School-organized PA (e.g., intramurals) | Yes | 39.6 (3631) | 48.4 (4135) | <0.0001 |
| No | 60.4 (5535) | 51.6 (4415) | ||
| School league/team sports (e.g., varsity) | Yes | 37.6 (3445) | 41.9 (3588) | <0.0001 |
| No | 62.4 (5710) | 58.1 (4974) | ||
| League/team sports outside of school | Yes | 47.5 (4338) | 58.1 (4975) | <0.0001 |
| No | 52.5 (4797) | 41.9 (3587) | ||
| Met MVPA guidelinesc | Yes | 47.5 (4338) | 58.1 (4975) | <0.0001 |
| No | 52.5 (4797) | 41.9 (3587) | ||
| Met resistance exercise guidelinesc | Yes | 50.3 (4601) | 57.4 (4900) | <0.0001 |
| No | 49.7 (4552) | 42.6 (3644) | ||
|
| ||||
| Screen time | ||||
| TV/movies | ≤2 hours/day | 43.6 (4012) | 47.6 (4112) | <0.0001 |
| >2 hours/day | 56.4 (5200) | 52.4 (4526) | ||
| Video/computer games | ≤2 hours/day | 89.5 (8248) | 50.9 (4398) | <0.0001 |
| >2 hours/day | 10.5 (964) | 49.1 (4240) | ||
| Surfing the Internet | ≤2 hours/day | 48.1 (4432) | 61.7 (5327) | <0.0001 |
| >2 hours/day | 51.9 (4780) | 38.3 (3311) | ||
| Talking on the telephone | ≤2 hours/day | 89.1 (8204) | 94.0 (8117) | <0.0001 |
| >2 hours/day | 10.9 (1008) | 6.0 (521) | ||
| Texting/messaging/emailing | ≤2 hours/day | 48.1 (4429) | 67.6 (5842) | <0.0001 |
| >2 hours/day | 51.9 (4780) | 32.4 (2796) | ||
|
| ||||
| Bullying victimization in the last 30 days | ||||
| Physical | Yes | 1.2 (107) | 3.2 (273) | <0.0001 |
| No | 98.8 (9118) | 96.8 (8382) | ||
| Verbal | Yes | 16.9 (1557) | 11.9 (1031) | <0.0001 |
| No | 83.1 (7668) | 88.1 (7624) | ||
| Cyber | Yes | 7.5 (692) | 2.2 (191) | <0.0001 |
| No | 92.5 (8533) | 97.8 (8464) | ||
| Stolen/damaged belongings | Yes | 2.3 (214) | 3.1 (265) | <0.0001 |
| No | 97.7 (9011) | 96.9 (8390) | ||
aBMI classification based on self-reported height and weight and age- and sex-adjusted cutoffs. bNumbers may not add to total due to rounding and/or missing data. cBased on PA guidelines for youths doing at least 60 min/day of MVPA and strengthening exercises at least 3 days/week.