Table 2 Bivariate analysis of the factors associated with suicidal behaviour
Study Variable | Total sample | Suicidal ideation | Suicidal plan | Suicidal attempt | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
N = 3152 | Yes | No | χ2 (p) | Yes | No | χ2 (p) | Yes | No | χ2 (p) | |
n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | ||||
Demographics | ||||||||||
Gender | 0.04 (0.87) | 0.33 (0.61) | 4.0 (0.08) | |||||||
Male | 1380 (44.3) | 278 (20.0) | 1102 (80.0) | 362 (25.7) | 1018 (74.3) | 365 (26.2) | 1015 (73.8) | |||
Female | 1772 (55.7) | 365 (20.3) | 1407 (79.7) | 457 (24.8) | 1315 (75.2) | 429 (23.2) | 1343 (76.8) | |||
School grade | 11.1 (0.001) | 47.2 (< 0.001) | 68.8 (< 0.001) | |||||||
Grade 6–9 | 1918 (60.5) | 423 (22.1) | 1495 (77.9) | 576 (29.3) | 1342 (70.7) | 576 (29.6) | 1342 (70.4) | |||
Grade 10–12 | 1183 (39.5) | 209 (17.2) | 974 (82.8) | 224 (18.4) | 959 (81.6) | 202 (16.5) | 981 (83.5) | |||
Mental health and lifestyle factors | ||||||||||
Loneliness | 48.3 (< 0.001) | 42.7 (< 0.001) | 44.7 (< 0.001) | |||||||
Yes | 449 (14.3) | 146 (32.3) | 303 (67.7) | 171 (37.7) | 278 (62.3) | 170 (37.0) | 279 (63.0) | |||
No | 2673 (85.8) | 488 (18.1) | 2185 (81.9) | 643 (23.2) | 2030 (76.8) | 614 (22.3) | 2059 (77.7) | |||
Worry/anxiety | 38.7 (< 0.001) | 50.0 (< 0.001) | 51.4 (< 0.001) | |||||||
Yes | 435 (13.8) | 138 (31.3) | 297 (68.8) | 169 (39.0) | 266 (61.0) | 167 (38.2) | 268 (61.8) | |||
No | 2699 (86.2) | 499 (18.3) | 2200 (81.7) | 647 (23.1) | 2052 (76.9) | 620 (22.2) | 2079 (77.8) | |||
Alcohol use | 8.6 (0.01) | 4.9 (0.02) | 3.6 (0.04) | |||||||
Yes | 860 (29.3) | 204 (23.4) | 656 (76.6) | 247 (28.0) | 613 (72.0) | 234 (26.6) | 626 (73.4) | |||
No | 2120 (70.7) | 400 (18.7) | 1720 (81.3) | 531 (24.2) | 1589 (75.8) | 511 (23.3) | 1609 (76.7) | |||
Leisure-time sedentary behaviour | 4.6 (0.01) | 5.2 (0.06) | 1.5 (0.29) | |||||||
Yes | 1138 (36.4) | 248 (21.9) | 890 (78.1) | 320 (27.4) | 818 (72.6) | 301 (25.5) | 837 (74.5) | |||
No | 1966 (63.6) | 377 (18.7) | 1589 (81.3) | 483 (23.8) | 1483 (76.2) | 475 (23.6) | 1491 (76.4) | |||
Cannabis use | 47.4 (< 0.001) | 25.9 (0.001) | 60.4 (< 0.001) | |||||||
Yes | 134 (4.6) | 58 (42.4) | 76 (57.6) | 59 (42.8) | 75 (57.2) | 72 (50.8) | 62 (49.2) | |||
No | 2909 (95.4) | 552 (18.7) | 2357 (81.3) | 715 (23.8) | 2194 (76.2) | 668 (22.3) | 2241 (77.7) | |||
Interpersonal factors | ||||||||||
Being sexually active | 17.9 (0.001) | 16 (0.004) | 10.4 (0.01) | |||||||
Yes | 958 (33.5) | 228 (24.0) | 730 (76.0) | 456 (22.2) | 1495 (77.8) | 260 (25.6) | 698 (73.4) | |||
No | 1951 (66.5) | 349 (17.4) | 1602 (82.6) | 279 (29.1) | 679 (70.9) | 431 (21.2) | 1520 (78.8) | |||
Close friends | 2.1 (0.20) | 7.4 (0.03) | 0.2 (0.71) | |||||||
None | 403 (13.0) | 93 (22.7) | 310 (77.3) | 125 (30.6) | 278 (69.5) | 105 (25.1) | 298 (74.9) | |||
One or more | 2701 (87.0) | 536 (19.7) | 2165 (80.3) | 677 (24.2) | 2024 (75.8) | 670 (24.2) | 2031 (75.8) | |||
Physical fight | 28.3 (< 0.001) | 67.7 (< 0.001) | 127.7 (< 0.001) | |||||||
Yes | 1074 (34.4) | 274 (25.5) | 800 (74.5) | 378 (34.1) | 696 (65.9) | 402 (36.4) | 672 (63.6) | |||
No | 2065 (65.6) | 366 (17.4) | 1699 (82.6) | 438 (20.6) | 1627 (79.4) | 358 (18.1) | 1680 (81.9) | |||
School-level factors | ||||||||||
Physical attack | 51.3 (< 0.001) | 81.2 (< 0.001) | 184.6 (< 0.001) | |||||||
Yes | 1253 (39.8) | 327 (26.5) | 926 (73.5) | 429 (33.8) | 824 (66.2) | 472 (37.4) | 781 (62.6) | |||
No | 1859 (60.2) | 308 (16.0) | 1551 (84.0) | 379 (19.5) | 1480 (80.5) | 313 (16.0) | 1546 (84.0) | |||
Truancy | 23.0 (0.001) | 65.5 (< 0.001) | 84.7 (< 0.001) | |||||||
Yes | 747 (24.0) | 193 (26.2) | 554 (73.8) | 273 (36.5) | 474 (63.5) | 279 (36.9) | 468 (36.1) | |||
No | 2355 (76.0) | 436 (18.1) | 1919 (81.9) | 535 (21.7) | 1820 (78.3) | 497 (20.3) | 1858 (79.7) | |||
Peer support | 0.1 (0.78) | 2.1 (0.27) | 0.5 (0.52) | |||||||
Yes | 853 (27.1) | 179 (20.6) | 674 (79.4) | 239 (26.9) | 614 (73.1) | 223 (25.2) | 630 (74.8) | |||
No | 2270 (72.9) | 459 (20.0) | 1811 (80.0) | 570 (24.4) | 1700 (75.6) | 558 (24.0) | 1712 (76.0) | |||
Bullying victimisation | 36.5 (< 0.001) | 60.5 (< 0.001) | 144.0 (< 0.001) | |||||||
Yes | 1311 (44.7) | 326 (25.3) | 985 (74.7) | 415 (31.8) | 896 (68.2) | 448 (34.1) | 863 (65.9) | |||
No | 1577 (55.4) | 264 (16.3) | 1313 (83.7) | 319 (19.2) | 1258 (80.8) | 247 (15.0) | 1330 (85.0) | |||
Family-level factors | ||||||||||
Parental supervision | 1.3 (0.40) | 23.1 (0.001) | 17.5 (0.01) | |||||||
Yes | 1369 (42.9) | 290 (21.0) | 1079 (79.0) | 412 (29.3) | 957 (70.7) | 389 (28.1) | 980 (72.0) | |||
No | 1743 (57.1) | 342 (19.3) | 1401 (80.7) | 392 (21.8) | 1351 (78.2) | 389 (21.5) | 1354 (78.5) | |||
Parental understanding | 4.9 (0.07) | 2.3 (0.26) | 0.1 (0.71) | |||||||
Yes | 1288 (40.9) | 238 (18.2) | 1050 (81.8) | 314 (23.6) | 974 (76.4) | 315 (23.8) | 973 (76.2) | |||
No | 1794 (59.1) | 389 (21.4) | 1405 (78.6) | 482 (26.0) | 1312 (74.0) | 450 (24.4) | 1344 (75.6) | |||
Parental monitoring | 1.0 (0.33) | 0.1 (0.86) | 6.3 (0.03) | |||||||
Yes | 1104 (35.1) | 214 (19.1) | 890 (80.9) | 290 (24.8) | 814 (75.2) | 253 (21.7) | 851 (78.3) | |||
No | 2018 (64.9) | 420 (20.6) | 1598 (79.4) | 516 (25.2) | 1502 (74.8) | 529 (25.8) | 1489 (74.3) | |||
Parental intrusion of privacy | 16.0 (0.002) | 19 (0.002) | 41.1 (< 0.001) | |||||||
Yes | 1764 (56.7) | 313 (17.5) | 1451 (82.5) | 401 (22.1) | 1363 (77.9) | 363 (20.0) | 1401 (80.0) | |||
No | 1356 (43.3) | 319 (23.3) | 1037 (76.7) | 405 (29.0) | 951 (71.0) | 416 (30.0) | 940 (70.0) | |||
Food insecurity | 13.9 (0.001) | 22.3 (0.001) | 38.3 (< 0.001) | |||||||
Yes | 310 (9.9) | 87 (28.3) | 223 (71.7) | 113 (36.3) | 197 (63.7) | 119 (38.8) | 191 (61.2) | |||
No | 2796 (90.1) | 546 (19.3) | 2250 (80.7) | 692 (24.0) | 2104 (76.0) | 659 (22.8) | 2137 (77.2) | |||