Objections to suicide among depressed patients with alcohol use disorders

Understanding how alcohol misuse interacts with beliefs that protect individuals against suicide can help to enhance suicide prevention strategies. One measure of suicide non-acceptability is the Moral Objections to Suicide (MOS) subscale of the Reasons for Living Inventory (RFLI).

521 mood disordered patients with and without alcohol use disorders (AUD) were administered a battery of clinical measures including the Scale for Suicidal Ideation and the Reasons for Living Inventory. A multivariate analysis of covariance (MANCOVA) was conducted, examining the effects of alcohol use history on the five RFLI subscales and suicidal ideation, while controlling for differences in age, education, marital status and sex.

RFL scores were no different between groups, except in one respect: patients with AUD had fewer moral objections to suicide. Higher suicidal ideation was associated with lower MOS scores. Prior suicidal behavior was associated with lower MOS, and higher current suicidal ideation. However, AUD history was not associated with suicidal ideation.

Patients with AUDs had fewer objections to suicide, even though their level of current suicidal ideation was similar to those without AUD, suggesting that attitudes about the acceptability of suicide may be conceptually distinguished from suicidal ideation, and may be differentially associated with risk for suicidal behavior. These findings suggest that alcohol use and suicidal behavior predict current attitudes toward suicide, however causal mechanisms are not clearly understood.