Table 3.
Descriptive statistics of key behaviors
| Prevalence | Mean (sd) | ||||||
|---|---|---|---|---|---|---|---|
| Behavior | Total | Boys | Girls | Total | Boys | Girls | p |
| MVPA-weekdays, ≥30 min/day | 38.3 | 46.1 | 30.9 | 29.2 (19.4) | 33.3 (22.0) | 25.3 (15.6) | <0.0001 |
| MVPA-weekend days, ≥30 min/ day | 22.9 | 31.2 | 14.8 | 21.9 (2.4) | 26.4 (25.1) | 16.1 (16.7) | <0.0001 |
| Traditional sports, ≥1 sessions/3 days | 42.9 | 49.7 | 36.4 | 3.2 (5.2) | 3.9 (5.7) | 2.5 (4.5) | 0.0002 |
| Fitness activities, ≥1 sessions/3 days | 40.0 | 40.1 | 40.0 | 1.7 (3.0) | 1.9 (3.4) | 1.6 (2.6) | 0.2003 |
| Other sports/playing, ≥1 sessions/3 days | 41.0 | 41.2 | 40.8 | 2.6 (5.2) | 2.8 (5.7) | 2.3 (4.6) | 0.1759 |
| Chores/work, ≥1 sessions/3 days | 44.7 | 40.6 | 48.6 | 3.0 (5.7) | 2.5 (4.9) | 3.5 (6.4) | 0.0297 |
| Watching TV, ≥2 hrs/day | 32.5 | 36.7 | 28.5 | 114.7 (93.3) | 123.5 (95.0) | 106.3 (91.1) | 0.0135 |
| Watching DVDs or videos, ≥1 hrs/day | 34.5 | 31.9 | 37.0 | 55.7 (61.1) | 51.8 (59.2) | 59.4 (62.7) | 0.0936 |
| Video/computer games, ≥1 hrs/day | 29.5 | 46.3 | 13.4 | 53.6 (84.0) | 83.1 (96.0) | 25.4 (58.2) | <0.0001 |
| Internet/computers, ≥1 hrs/day | 53.8 | 49.4 | 57.9 | 93.6 (94.6) | 86.9 (94.3) | 100.1 (94.6) | 0.0615 |
| Talking/texting on phone, ≥1 hrs/day | 37.2 | 28.1 | 45.9 | 78.8 (108.6) | 54.2 (85.1) | 102.3 (122.7) | <0.0001 |
| Reading/homework, ≥2 hrs/day | 47.2 | 39.7 | 54.4 | 143.2 (104.7) | 122.6 (96.0) | 162.6 (109.0) | <0.0001 |
Abbreviations: MVPA, moderate-to-vigorous physical activity; TV, television; DVD, digital video disc
Note: Total sample = 720, though sample sizes for individual analyses vary slightly due to missing data. Differences between boys and girls assessed via t-test.