Table 1.
Demographic and clinical characteristics in patients with MDD
| Characteristics | Nonsuicidal risk group (n = 736) | Suicidal risk group (n = 293) | χ2/t | P |
|---|---|---|---|---|
| Age (years), n (%) | ||||
| 18≤ age ≤25 | 93 (12.6) | 56 (19.1) | 12.677 | 0.005 |
| 25< age ≤35 | 191 (26.0) | 88 (30.0) | ||
| 35< age ≤45 | 193 (26.2) | 72 (24.6) | ||
| 45< age ≤55 | 259 (35.2) | 77 (26.3) | ||
| Gender, n (%) | ||||
| Male | 216 (29.3) | 102 (34.8) | 2.931 | 0.087 |
| Female | 520 (70.7) | 191 (65.2) | ||
| Work status, n (%) | ||||
| No job | 231 (31.4) | 90 (30.7) | 0.044 | 0.978 |
| Part-time job | 15 (2.0) | 6 (2.0) | ||
| Full-time job | 490 (66.6) | 197 (67.2) | ||
| Marriage, n (%) | ||||
| Married | 551 (74.9) | 179 (61.1) | 19.287 | <0.001 |
| Divorced | 40 (5.4) | 25 (8.5) | ||
| Single | 145 (19.7) | 89 (30.4) | ||
| Education, n (%) | ||||
| Illiteracy | 5 (0.7) | 2 (0.7) | 19.858 | 0.001 |
| Primary school | 53 (7.2) | 12 (4.1) | ||
| Junior middle school | 194 (26.4) | 46 (15.7) | ||
| Senior middle school | 147 (20.0) | 76 (25.9) | ||
| Bachelor degree | 292 (39.7) | 133 (45.4) | ||
| Master degree and above | 45 (6.1) | 24 (8.2) | ||
| Smoking, n (%) | ||||
| Never | 588 (79.9) | 232 (79.2) | 1.799 | 0.407 |
| Former | 42 (5.7) | 12 (4.1) | ||
| Smoker | 106 (14.4) | 49 (16.7) | ||
| Drinking, n (%) | ||||
| Never | 546 (74.2) | 188 (64.2) | 12.519 | 0.002 |
| Former | 48 (6.5) | 19 (6.5) | ||
| Drinker | 142 (19.3) | 86 (29.4) | ||
| Childless, n (%) | 189 (25.7) | 114 (38.9) | 17.652 | <0.001 |
| BMI, mean (SD) | 22.9 (3.6) | 22.6 (3.3) | 1.311 | 0.190 |
| Number of depressive episode | 1.7 (2.0) | 1.8 (1.3) | −0.050 | 0.960 |
| HAMD-17* | 20.0 (4.6) | 23.2 (5.6) | −8.676 | <0.001 |
*HAMD-17 without item 3. MDD: Major depressive disorder; HAMD-17: 17-item Hamilton Depression Scale; SD: Standard deviation; BMI: Body mass index.