Table 1 Comparisons between the SI and NSI group in background characteristics and psychological variables
Characteristics |  | SI n(%) | NSI n(%) | χ2/t test | p |
|---|---|---|---|---|---|
Age |  | 44.80 ± 14.85 | 52.28 ± 10.82 | -4.42 | < 0.01 |
Education level (in years) |  | 8.53 ± 3.24 | 8.97 ± 4.26 | -0.90 | 0.37 |
Sex | Male | 48(31.4) | 30(28.6) | 0.23 | 0.63 |
| Â | Female | 105(68.6) | 75(71.4) | Â | Â |
Residence identity | Rural | 66(43.1) | 51(48.6) | 0.74 | 0.39 |
| Â | City | 87(56.9) | 54(51.4) | Â | Â |
Marital status | Single | 21(13.7) | 33(31.4) | 11.20 | < 0.01 |
| Â | Married | 132(86.3) | 72(68.6) | Â | Â |
Family history of mental disorders | Yes | 12(7.8) | 15(14.3) | 2.76 | 0.10 |
| Â | No | 141(92.2) | 90(85.7) | Â | Â |
Personal history of attempted suicide | Yes | 6(3.9) | 3(2.9) | 0.21 | 0.65 |
| Â | No | 147(96.1) | 102(97.1) | Â | Â |
Presence of physical disease | Yes | 30(19.6) | 24(22.9) | 0.40 | 0.53 |
| Â | No | 123(80.4) | 81(77.1) | Â | Â |
Depression |  | 23.88 ± 6.64 | 15.86 ± 5.74 | 10.07 | < 0.01 |
Suicidal ideation |  | 36.10 ± 8.93 | 17.54 ± 5.49 | 20.64 | < 0.01 |
Hopelessness |  | 14.31 ± 4.92 | 8.14 ± 5.39 | 9.52 | < 0.01 |
Impulsivity |  | 90.22 ± 23.07 | 78.66 ± 19.34 | 4.36 | < 0.01 |