Which factors may differentiate lifetime suicide attempters from ideators in obsessive-compulsive disorder patients?

The causes underlying suicidal behaviour in patients with obsessive-compulsive (OCD) are not fully understood.

In this study, we examined whether lifetime suicide attempt (SA), and suicide ideation (SI) was associated with affective temperaments, impulsivity, childhood traumatic events or separation anxiety.

We compared OCD patients with lifetime SA (Group 1; n=25), lifetime suicide ideation (SI) (Group 2; n=62), and without lifetime SI and SA (Group 3; n=73) through Beck Scale for Suicidal Ideation (BSSI), Childhood Trauma Questionnaire Questionnaire (CTQ-SF), Separation Anxiety Symptom Inventory (SASI), Baratt Impulsiveness Scale (BIS-11), Temperament Evaluation of Memphis, Pisa, Paris and San Diego (TEMPS-A), and Beck Depression Inventory (BDI).

Post hoc tests showed that educational level was significantly lower in Group 1 than in both Group 2 and 3. Childhood abuse were significantly higher in attempters than ideators, and non-suicidal patients. The depressive, cyclothymic, and anxious temperaments were significantly higher in attempters and ideators compared to control subjects. The aggressive obsessions (p=0.002), childhood abuse history (p=0.009), lifetime major depression (p=0.017), and lower educational levels (p=0.006) strongly predicted the increased risk of lifetime SA, compared to non-suicidal patients. Childhood abuse (p=0.022) was the most significant predictor of lifetime SA in OCD.

We suggested that childhood abuse history emerged as the most significant variable that distinguished lifetime attempters from only ideators in OCD patients.