Table 1 General characteristics of the study population
Variables | Total N = 33,254 | Male participants | Total N = 32,231 | Female participants | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Suicidal ideation | P-value | Suicide attempt | P-value | Suicidal ideation | P-value | Suicide attempt | P-value | |||
Yes | Yes | Yes | Yes | |||||||
N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |||||
Type of counselor | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Father | 2486 (7.5) | 208 (6.7) |  | 48 (1.5) |  | 621 (1.9) | 94 (3.0) |  | 30 (1.0) |  |
 Mother | 8131 (24.5) | 503 (2.8) |  | 92 (0.5) |  | 9583 (29.7) | 886 (5.0) |  | 173 (1.0) |  |
 Sibling | 1405 (4.2) | 136 (3.6) |  | 31 (0.8) |  | 2390 (7.4) | 254 (6.7) |  | 56 (1.5) |  |
 Friend | 9389 (28.2) | 974 (4.1) |  | 167 (0.7) |  | 14,254 (44.2) | 2010 (8.5) |  | 401 (1.7) |  |
 Teacher | 858 (2.6) | 119 (9.7) |  | 26 (2.1) |  | 367 (1.1) | 89 (7.3) |  | 25 (2.0) |  |
 Other | 972 (2.9) | 132 (7.8) |  | 32 (1.9) |  | 710 (2.2) | 130 (7.7) |  | 35 (2.1) |  |
 None | 10,013 (30.1) | 1170 (8.2) |  | 232 (1.6) |  | 4306 (13.4) | 1063 (7.4) |  | 252 (1.8) |  |
Middle and high school | 0.0278 |  | 0.1161 |  |  | 0.0009 |  | < 0.0001 | ||
 Middle school | 16,627 (50.0) | 1561 (4.8) |  | 334 (1.0) |  | 16,013 (49.7) | 2353 (7.2) |  | 593 (1.8) |  |
 High school | 16,627 (50.0) | 1681 (5.1) |  | 294 (0.9) |  | 16,218 (50.3) | 2173 (6.6) |  | 379 (1.2) |  |
Having parents | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Both or single parents | 32,809 (98.7) | 3141 (4.8) |  | 587 (0.9) |  | 32,011 (99.3) | 4469 (6.9) |  | 942 (1.5) |  |
 None | 445 (1.3) | 101 (15.2) |  | 41 (6.2) |  | 220 (0.7) | 57 (8.6) |  | 30 (4.5) |  |
Perceived household economic status | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 High | 12,510 (37.6) | 1150 (5.0) |  | 232 (1.0) |  | 10,641 (33.0) | 1327 (5.7) |  | 303 (1.3) |  |
 Middle | 15,107 (45.4) | 1266 (4.1) |  | 220 (0.7) |  | 15,945 (49.5) | 1948 (6.3) |  | 370 (1.2) |  |
 Low | 5637 (17.0) | 826 (7.3) |  | 176 (1.6) |  | 5645 (17.5) | 1251 (11.1) |  | 299 (2.7) |  |
Academic achievement | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 High | 12,514 (37.6) | 1107 (4.5) |  | 197 (0.8) |  | 12,023 (37.3) | 1470 (6.0) |  | 281 (1.1) |  |
 Middle | 8984 (27.0) | 795 (4.3) |  | 145 (0.8) |  | 9323 (28.9) | 1138 (6.2) |  | 229 (1.3) |  |
 Low | 11,756 (35.4) | 1340 (5.9) |  | 286 (1.3) |  | 10,885 (33.8) | 1918 (8.5) |  | 462 (2.0) |  |
Alcohol | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Yes | 6555 (19.7) | 921 (8.6) |  | 212 (2.0) |  | 4142 (12.9) | 913 (8.5) |  | 241 (2.3) |  |
 No | 26,699 (80.3) | 2321 (4.2) |  | 416 (0.8) |  | 28,089 (87.2) | 3613 (6.6) |  | 731 (1.3) |  |
Smoking | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Yes | 3929 (11.8) | 605 (12.3) |  | 179 (3.6) |  | 1004 (3.1) | 330 (6.7) |  | 128 (2.6) |  |
 No | 29,325 (88.2) | 2637 (4.4) |  | 449 (0.7) |  | 31,227 (96.9) | 4196 (6.9) |  | 844 (1.4) |  |
Subjective happiness | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Happy | 22,143 (66.6) | 1156 (2.7) |  | 231 (0.5) |  | 20,191 (62.6) | 1484 (3.5) |  | 304 (0.7) |  |
 Neutral | 8474 (25.5) | 1069 (6.0) |  | 200 (1.1) |  | 9350 (29.0) | 1723 (9.7) |  | 322 (1.8) |  |
 Unhappy | 2637 (7.9) | 1017 (19.1) |  | 197 (3.7) |  | 2690 (8.4) | 1319 (24.8) |  | 346 (6.5) |  |
Stress awareness | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 High | 10,285 (30.9) | 2266 (9.5) |  | 451 (1.9) |  | 13,673 (42.4) | 3490 (14.6) |  | 756 (3.2) |  |
 Low | 22,969 (69.1) | 976 (2.4) |  | 177 (0.4) |  | 18,558 (57.6) | 1036 (2.5) |  | 216 (0.5) |  |
Depression | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Yes | 6655 (20.0) | 2269 (14.5) |  | 470 (3.0) |  | 9043 (28.1) | 3364 (21.4) |  | 757 (4.8) |  |
 No | 26,599 (80.0) | 973 (2.0) |  | 158 (0.3) |  | 23,188 (71.9) | 1162 (2.3) |  | 215 (0.4) |  |
Sleep time for fatigue recovery | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Sufficient | 10,762 (32.4) | 627 (3.5) |  | 126 (0.7) |  | 7164 (22.2) | 639 (3.6) |  | 152 (0.8) |  |
 Normal | 11,413 (34.3) | 995 (4.5) |  | 178 (0.8) |  | 10,830 (33.6) | 1283 (5.8) |  | 273 (1.2) |  |
 Not sufficient | 11,079 (33.3) | 1620 (6.4) |  | 324 (1.3) |  | 14,237 (44.2) | 2604 (10.3) |  | 547 (2.2) |  |
Causes of stress | < 0.0001 |  | < 0.0001 |  |  | < 0.0001 |  | < 0.0001 | ||
 Achievement/career choice | 19,123 (57.5) | 1421 (3.7) |  | 202 (0.5) |  | 19,576 (60.7) | 2042 (5.3) |  | 347 (0.9) |  |
 Family problems | 6126 (18.4) | 982 (9.4) |  | 214 (2.0) |  | 4360 (13.5) | 1103 (10.5) |  | 274 (2.6) |  |
 Friendships | 2539 (7.6) | 386 (6.6) |  | 79 (1.4) |  | 3308 (10.3) | 740 (12.7) |  | 182 (3.1) |  |
 Appearance | 3160 (9.5) | 231 (3.2) |  | 57 (0.8) |  | 4002 (12.4) | 496 (6.9) |  | 125 (1.7) |  |
 Other | 2306 (6.9) | 222 (6.7) |  | 76 (2.3) |  | 985 (3.1) | 145 (4.4) |  | 44 (1.3) |  |
Total | 33,254 | 3242 (9.7) | Â | 628 (1.9) | Â | 32,231 | 4526 (14.0) | Â | 972 (3.0) | Â |