Table 1.
Descriptive characteristics of the sample.
| Total sample | SI(+), n = 828 | SI(−), n = 2,172 | p | |
|---|---|---|---|---|
| Age | 25.4 ± 4.9 | 25.1 ± 4.9 | 25.5 ± 4.9 | 0.035 |
| Gender, males | 1,250 (41.7) | 301 (36.4) | 949 (43.7) | <0.001 |
| Education | ||||
| Primary | 101 (3.4) | 48 (5.8) | 53 (2.4) | <0.001 |
| Vocational | 46 (1.5) | 22 (2.7) | 24 (1.1) | |
| Secondary | 911 (30.4) | 281 (33.9) | 630 (29.0) | |
| Incomplete higher | 720 (24.0) | 189 (22.8) | 531 (24.5) | |
| Higher | 1,222 (40.7) | 288 (34.8) | 934 (43.0) | |
| Occupation | ||||
| Unemployed | 113 (3.8) | 44 (5.3) | 69 (3.2) | <0.001 |
| Student | 1,557 (51.9) | 468 (56.5) | 1,089 (50.1) | |
| Employed | 1,300 (43.3) | 303 (36.6) | 997 (45.9) | |
| Rent | 30 (1.0) | 13 (1.6) | 17 (0.8) | |
| Married or informal relationship | 1,999 (66.6) | 487 (58.8) | 1,512 (69.6) | <0.001 |
| Family history of schizophrenia | 146 (4.9) | 56 (6.8) | 90 (4.1) | 0.002 |
| Family history of mood disorder | 597 (19.9) | 202 (24.4) | 395 (18.2) | <0.001 |
| Lifetime problematic substance use | 1,115 (37.2) | 354 (42.8) | 761 (35.0) | <0.001 |
| CT | 2,680 (89.3) | 779 (94.1) | 1,901 (87.5) | <0.001 |
| ARQ | 13.2 ± 5.7 | 15.7 ± 5.9 | 12.2 ± 5.4 | <0.001 |
| Self-injuries, lifetime | 651 (21.7) | 308 (37.2) | 343 (15.8) | <0.001 |
| ASRS | 30.2 ± 10.3 | 34.4 ± 10.3 | 28.6 ± 10.8 | <0.001 |
| PLEs | 22.5 ± 4.9 | 25.0 ± 6.0 | 21.5 ± 4.0 | <0.001 |
| PHQ-9 | 9.0 ± 4.7 | 12.3 ± 4.7 | 7.7 ± 4.1 | <0.001 |
| ISI | 5.8 ± 3.7 | 7.7 ± 3.8 | 5.1 ± 3.4 | <0.001 |
Data presented as mean ± SD or n (%).
Abbreviations: ARQ, the Adult Reading Questionnaire; ASRS, the Adult ADHD Self-Report Scale; CT, childhood trauma; ISI, the Insomnia Severity Index; PHQ-9; the Patient Health Questionnaire-9; PLEs, psychotic-like experiences; SI(+), participants with the current suicidal ideation; SI(−), participants without the current suicidal ideation.