| Characteristics | PTC + depression (n = 30) | PTC+ non-depressed (n = 50) | Healthy control (n = 30) | P value |
| Age (years) | 45.15 ± 10.25 | 44.01 ± 9.74 | 45.88 ± 10.5 | 0.134 |
| Gender |
|
|
| 0.674 |
| Female | 13 (43.3) | 24 (48) | 12 (30) |
|
| Male | 17 (56.7) | 26 (52) | 18 (70) |
|
| Education years |
|
|
| 0.308 |
| ≤12 years | 14 (43.3) | 26 (52) | 14 (43.3) |
|
| >12 years | 16 (56.7) | 24 (48) | 16 (56.7) |
|
| Marriage status |
|
|
| 0.797 |
| Single | 13 (43.3) | 24 (48) | 15 (50) |
|
| Married | 17 (56.7) | 26 (52) | 15 (50) |
|
| Salary (yuan) |
|
|
| 0.273 |
| ≤5000 | 12 (40) | 22 (44) | 13 (43.3) |
|
| >5000 | 17 (60) | 28 (56) | 17 (56.7) |
|