| Group | Degree of current depressive symptoms n (%) | Total | ||||
| No symptoms | Mild | Mild to moderate | Moderate to severe | Severe | ||
| Case | 18 (34) | 20 (37.7) | 4 (7.5) | 6 (11.3) | 5 (9.4) | 53 (100.0) |
| Control | 21 (42) | 7 (14) | 2 (4) | 10 (20) | 10 (20) | 50 (100.0) |
| Total | 39 (37.8) | 27 (26.2) | 6 (5.8) | 16 (15.5) | 15 (14.5) | 103 (100.0) |