Demographic characteristics of the total sample
| Variable | Number (%) |
|---|---|
| Total | 3186 (100.0) |
| Gender | |
| Male | 1700 (53.4) |
| Female | 1486 (46.6) |
| Age (years) | |
| 13–14 | 420 (13.2) |
| 15–16 | 1687 (53.0) |
| 17–18 | 1079 (33.9) |
| Grade | |
| 7th–9th | 1686 (52.9) |
| 10th–12th | 1500 (47.1) |
| Living arrangement | |
| Two biological parents | 2836 (89.0) |
| Only father or mother | 149 (4.7) |
| Others | 201 (6.3) |
| Family economic status | |
| Above average | 975 (30.6) |
| Average | 1942 (61.0) |
| Below average | 269 (8.4) |
| Family relationship | |
| Above average | 2501 (78.5) |
| Average | 502 (15.8) |
| Below average | 183 (5.7) |
| Parental caring | |
| Satisfied with father or mother | 545 (17.1) |
| Satisfied with both of them | 2471 (77.6) |
| Dissatisfied with both of them | 170 (5.3) |
| Academic achievement | |
| Above average | 1361 (42.7) |
| Average | 932 (29.3) |
| Below average | 893 (28.0) |
| Academic pressure | |
| Above average | 1344 (42.2) |
| Average | 1376 (43.2) |
| Below average | 466 (14.4) |
| Relationship with teachers | |
| Good | 1552 (48.7) |
| Average | 1408 (44.2) |
| Poor | 226 (7.1) |
| Relationship with classmates | |
| Good | 2220 (69.7) |
| Average | 846 (26.6) |
| Poor | 120 (3.8) |
| Feel lonely | |
| Less than 1 day/week | 1733 (54.4) |
| 1 to 4 days/week | 1073 (33.7) |
| More than 4 days/week | 380 (11.9) |
| Suicide ideation | |
| Never | 2589 (81.3) |
| Occasionally (1–2 times/year) | 391 (12.3) |
| Sometimes (3–6 times/year) | 75 (2.4) |
| Often (over 6 times/year) | 131 (4.1) |
| Suicide attempt | |
| Never | 3083 (95.8) |
| Occasionally (1–2 times/year) | 81 (2.5) |
| Sometimes (3–6 times/year) | 14 (0.4) |
| Often (over 6 times/year) | 38 (1.2) |
| Hurt themselves on purpose | |
| Never | 2807 (88.1) |
| Occasionally (1–2 times/year) | 269 (8.4) |
| Sometimes (3–6 times/year) | 61 (1.9) |
| Often (over 6 times/year) | 49 (1.5) |
| Running away from home | |
| Never | 2262 (71.0) |
| Considered | 815 (25.6) |
| Planned | 48 (1.5) |
| Attempted | 61 (1.9) |
| Habit of sleeping after lunch | |
| Never | 308 (9.7) |
| Occasionally (1–4 times/week) | 1598 (50.2) |
| Often (over 4 times/week) | 1280 (40.2) |