Table 1.
Comparison of socio-demographic and clinical variables between the groups for each of the three samples
| Montreal healthy controls | Montreal patient contro | Montreal suicide attempters | F/χ² | P | Post-hoc | ||||
|---|---|---|---|---|---|---|---|---|---|
| n = 66 | n = 26 | n = 17 | |||||||
| Gender, n males (%) | 30 | (45.5) | 7 | (28.0) | 3 | (17.6) | 5.6 | 0.06 | |
| Age, mean (SD) | 32.3 | (7.4) | 41.0 | (11.0) | 37.6 | (10.2) | 9.7 | <10−3 | PC > HC |
| BDI score, mean (SD) | 1.5 | (2.3) | 29.6 | (11.5) | 30.5 | (11.5) | 178.7 | <10−3 | PC, SA > HC |
| HDRS score, mean (SD) | 1.7 | (2.4) | 28.4 | (6.4) | 28.5 | (10.4) | 282.7 | <10−3 | PC, SA > HC |
| Age at first depression (SD) | – | – | 39.3 | (11.8) | 29.4 | (9.9) | 2.5 | 0.02 | SA < PC |
| Number of depressive episodes (SD) | – | – | 1.9 | (1.2) | 2.1 | (1.1) | −0.3 | 0.7 | |
| Family history of suicidal act, n (%) | – | – | 7 | (31.8) | 3 | (20.0) | 0.6 | 0.3 | |
| Number of suicidal act (SD) | – | – | – | – | 1.4 | (1.3) | – | – | |
| History of violent suicidal act, n (%) | – | – | – | – | 2 | (13.3) | – | – | |
| SIS score (SD) | – | – | – | – | 18.4 | (5.6) | – | – | |
| History of physical or sexual childhood trauma, n (%) | – | – | 4 | (19) | 7 | (50) | 3.7 | 0.06 | |
| Jena healthy controls | Jena patient controls | Jena suicide attempters | F/χ² | p | Post-hoc | ||||
| n = 34 | n = 34 | n = 32 | |||||||
| Gender, n males (%) | 9 | (26.5) | 9 | (26.5) | 9 | (28.1) | 0.03 | 1.0 | |
| Age, mean (SD) | 36.7 | (9.8) | 35.7 | (11.9) | 37.2 | (11.8) | 0.1 | 0.9 | |
| BDI score, mean (SD) | 2.0 | (2.2) | 29.0 | (8.0) | 26.7 | (12.9) | 98.7 | <10−3 | PC, SA > HC |
| HDRS score, mean (SD) | – | – | 21.1 | (9.6) | 21.4 | (9.9) | 0.9 | 0.4 | – |
| Age at first depression (SD) | – | – | 29.6 | (12.4) | 29.6 | (11.5) | 0.01 | 1.0 | |
| Number of depressive episodes (SD) | – | – | 1.1 | (1.2) | 1.9 | (2.2) | −1.8 | 0.08 | |
| Family history of suicidal act, N (%) | – | – | 5 | (14.7) | 6 | (18.8) | |||
| Number of suicidal act (SD) | – | – | – | – | 1.2 | (0.4) | |||
| History of violent suicidal act, N (%) | – | – | – | – | 11 | (34.4) | |||
| SIS score (SD) | – | – | – | – | 20.3 | (4.4) | |||
| Montreal patient relatives | Montreal suicide relatives | F/χ² | p | Post-hoc | |||||
| n = 17 | n = 16 | ||||||||
| Gender, n males (%) | 7 | (41.2) | 8 | (50.0) | 0.3 | 0.9 | |||
| Age, mean (SD) | 37.6 | (8.5) | 50.6 | (9.2) | 35.0 | <10−3 | SR > PR | ||
| BDI score, mean (SD) | 1.6 | (2.2) | 1.9 | (3.1) | 0.2 | 0.8 | |||
| HDRS score, mean (SD) | 1.7 | (2.2) | 2.3 | (2.0) | 0.4 | 0.7 | |||
BDI Beck depression inventory, HDRS 21-item Hamilton rating scale for depression, SIS suicide intent scale, SA suicide attempters, PC patient controls, HC healthy controls, PR patient relatives, SR suicide relatives