Table 1 General characteristics of suicidal behaviors in the study population
| Variable |
Total sample (n = 18,900) | Suicidal ideation (n = 4982) | Suicidal plan (n = 2493) | Suicidal attempt (n = 983) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | χ2 | P | n (%) | χ2 | P | n (%) | χ2 | P | ||
| Gender | 78.90 | < 0.001 | 8.64 | 0.003 | 0.46 | 0.496 | ||||
| Male | 8986 (47.5) | 2100 (23.4) | 1117 (12.4) | 457 (5.1) | ||||||
| Female | 9914 (52.5) | 2882 (29.1) | 1376 (13.9) | 526 (5.3) | ||||||
| Residential background | 36.15 | < 0.001 | 28.90 | < 0.001 | 1.23 | 0.267 | ||||
| Rural | 9401 (49.7) | 2296 (24.4) | 1115 (11.9) | 472 (5.0) | ||||||
| Urban | 9499 (50.3) | 2686 (28.3) | 1378 (14.5) | 511 (5.4) | ||||||
| Any siblings | 0.29 | 0.589 | 0.06 | 0.805 | 2.99 | 0.084 | ||||
| Yes | 10,081 (53.3) | 2641 (26.2) | 1324 (13.1) | 498 (4.9) | ||||||
| No | 8819 (46.7) | 2341 (26.5) | 116 (13.3) | 485 (5.5) | ||||||
| Grade | 20.58 | < 0.001 | 3.45 | 0.063 | 9.65 | 0.002 | ||||
| Junior high school | 10,386 (55.0) | 2601 (25.0) | 1327 (12.8) | 493 (4.7) | ||||||
| Senior high school | 8514 (45.0) | 2381 (28.0) | 1166 (13.7) | 490 (5.8) | ||||||
| Accommodation type | 15.04 | < 0.001 | 8.35 | 0.004 | 1.32 | 0.251 | ||||
| Boarding student | 9566 (50.6) | 2639 (27.6) | 1329 (13.9) | 480 (5.0) | ||||||
| Commuting student | 9334 (49.4) | 2343 (25.1) | 1164 (12.5) | 503 (5.4) | ||||||
| Father’s educational level | 45.89 | < 0.001 | 61.04 | < 0.001 | 106.31 | < 0.001 | ||||
| < High school degree | 10,545 (55.8) | 2701 (25.6) | 1304 (12.4) | 477 (4.5) | ||||||
| ≥ High school degree | 8136 (43.0) | 2181 (26.8) | 1124 (13.8) | 463 (5.7) | ||||||
| No father | 219 (1.2) | 100 (45.7) | 65 (29.7) | 43 (19.6) | ||||||
| Mother’s educational level | 19.57 | < 0.001 | 36.60 | < 0.001 | 78.51 | < 0.001 | ||||
| < High school degree | 11,490 (60.8) | 2948 (25.7) | 1414 (12.3) | 564 (4.9) | ||||||
| ≥ High school degree | 7217 (38.2) | 1960 (27.2) | 1032 (14.3) | 382 (5.3) | ||||||
| No mother | 193 (1) | 74 (38.3) | 47 (24.4) | 37 (19.2) | ||||||
| Self-reported family economy | 181.91 | < 0.001 | 130.75 | < 0.001 | 100.89 | < 0.001 | ||||
| Bad | 2695 (14.2) | 994 (36.9) | 535 (19.9) | 234 (8.7) | ||||||
| General | 13,374 (70.8) | 3257 (24.4) | 1567 (11.7) | 566 (4.2) | ||||||
| Good | 2831 (15.0) | 731 (25.8) | 391 (13.8) | 183 (6.5) | ||||||
| Number of friends | 227.01 | < 0.001 | 105.97 | < 0.001 | 32.71 | < 0.001 | ||||
| ≤ 2 | 4630 (24.5) | 1584 (34.2) | 809 (17.5) | 314 (6.8) | ||||||
| 3–5 | 7719 (40.8) | 1987 (25.7) | 967 (12.5) | 345 (4.5) | ||||||
| ≥ 6 | 6551 (34.7) | 1411 (21.5) | 717 (10.9) | 324 (4.9) | ||||||
| Smoking | 230.30 | < 0.001 | 401.46 | < 0.001 | 866.89 | < 0.001 | ||||
| Yes | 579 (3.1) | 311 (53.7) | 237 (40.9) | 185 (32.0) | ||||||
| No | 18,321 (96.9) | 4671 (25.5) | 2256 (12.3) | 798 (4.4) | ||||||
| Being bullied | 709.48 | < 0.001 | 569.18 | < 0.001 | 343.09 | < 0.001 | ||||
| Yes | 3891 (20.6) | 1678 (43.1) | 962 (24.7) | 431 (11.1) | ||||||
| No | 15,009 (79.4) | 3304 (22.0) | 1531 (10.2) | 552 (3.7) | ||||||