Table 1. Demographic Characteristics of Probands and Relatives by a Lifetime History of Suicide Attempts in the NIMH and Lausanne Studies.
| Variable | Suicide Attempts | |||||||
|---|---|---|---|---|---|---|---|---|
| Probands | Relatives | |||||||
| NIMH (n = 468) | Lausanne (n = 651) | NIMH (n = 2193) | Lausanne (n = 3162) | |||||
| Yes | No | Yes | No | Yes | No | Yes | No | |
| No. (%) | 58 (12.4) | 410 (87.6) | 32 (4.9) | 619 (95.0) | 98 (4.5) | 2095 (95.5) | 101 (3.2) | 3061 (96.8) |
| Female, No. (%) | 379 (80.9) | 305 (65.1) | 509 (78.1) | 356 (54.6) | 1476 (67.3) | 1149 (52.4) | 2065 (65.3) | 1575 (49.8) |
| P value | .02 | .009 | .004 | .002 | ||||
| Age, mean (SD) [range], y | 43.2 (12.5) [20.0-69.0] | 50.3 (15.1) [18.0-90.0] | 50.7 (8.5) [38.7-68.7] | 51.0 (9.2) [35.8-78.5] | 49.7 (17.4) [18.0-91.0] | 54.2 (18.9) [18.0-102.0] | 49.8(17.3) [20.0-91.0] | 55.0 (19.7) [18.0-98.0] |
| P value | .001 | .83 | .02 | .009 | ||||
Abbreviation: NIMH, National Institute of Mental Health.