Table 1.
Participants’ characteristics
| Characteristics | Males |
Females |
||
|---|---|---|---|---|
| na | %b | na | %b | |
| N weighted = 5,400,584 | 3495 | 45·9 | 4046 | 54·1 |
| Student-level variables | ||||
| Age | ||||
| 13 | 426 | 15·5 | 569 | 17·3 |
| 14 | 667 | 28·6 | 830 | 32·2 |
| 15 | 795 | 21·7 | 828 | 18·1 |
| 16 | 744 | 16·3 | 884 | 15·9 |
| 17 | 863 | 18·0 | 935 | 16·5 |
| BMI-Z score, mean (SD) | -0·4 (1·3) | -0·5 (1·0) | ||
| Place of residence | ||||
| Rural | 1717 | 62·7 | 2041 | 64·2 |
| Urban | 1778 | 37·3 | 2005 | 35·8 |
| Living with mother/father | ||||
| No | 583 | 17·2 | 669 | 17·5 |
| Yes | 2909 | 82·8 | 3376 | 82·5 |
| Parental monitoring, mean (SD) | 5·7 (2·3) | 5·4 (2·2) | ||
| Number of close friends | ||||
| 0 | 347 | 8·4 | 417 | 9·0 |
| 1 | 386 | 10·3 | 665 | 15·2 |
| 2 | 447 | 12·9 | 699 | 17·6 |
| ≥3 | 2269 | 68·3 | 2218 | 58·2 |
| Loneliness | ||||
| No | 3026 | 88·3 | 3438 | 87·2 |
| Yes | 468 | 11·7 | 608 | 12·8 |
| Anxiety | ||||
| No | 3295 | 95·2 | 3700 | 92·8 |
| Yes | 194 | 4·8 | 344 | 7·2 |
| Truancy | ||||
| No | 2782 | 82·9 | 3418 | 87·0 |
| Yes | 614 | 17·1 | 544 | 13·0 |
| School health promotion programs | ||||
| Percentage of students taught about, mean (SD) | ||||
| Benefits of eating more fruits and vegetables | 82·3 (10·1) | 82·9 (9·6) | ||
| Signs of depression and suicidal behaviors | 20·8 (8·4) | 21·4 (8·1) | ||
| Problems associated with drinking alcohol | 70·9 (9·7) | 71·5 (9·2) | ||
| Problems associated with using drugs | 84·4 (6·8) | 85·2 (6·7) | ||
| Benefits of physical activity | 81·2 (11·7) | 81·8 (11·1) | ||
| Percentage of students taught > 3 soft skills, mean (SD) | 45·4 (11·1) | 45·9 (10·3) | ||
| School quality proxy | ||||
| 1st tertile | 1232 | 25·4 | 1295 | 21·4 |
| 2nd tertile | 1204 | 34·4 | 1385 | 35·7 |
| 3rd tertile | 1059 | 40·2 | 1366 | 42·9 |
a
Unweighted frequency
b
Weighted percentage