Pain has been linked with an increased risk of engaging in suicidal behavior. However, the role of common mental disorders (CMDs) and borderline personality disorder (BPD) traits in this association is largely unknown. This study was based on data from the 2007 Adult Psychiatric Morbidity Survey (N = 7403). Suicidal behavior referred to past 12-month suicidal ideation and suicide attempt. Pain was assessed in terms of the level of its interference with work activity in the past four weeks. BPD traits were assessed with the structured interview for DSM disorders questionnaire, and CMDs with the Clinical Interview Schedule Revised (CIS-R). Multivariate logistic regression and mediation analyses were conducted to analyze the association between pain and suicidal behavior, and the role of CMDs and BPD traits in this association. The prevalence of past 12-month suicidal ideation and suicide attempt increased from 2.7% to 11.5% and 0.2% to 2.4%, respectively, between no pain and extreme pain. Pain was found to be significantly associated with suicidal ideation (ORs = 1.61-2.92) and suicide attempt (ORs = 2.95-6.70). CMDs were significant mediators in the pain-suicidal behavior relationship but did not fully explain the association. BPD had little influence in this association. Assessing suicide risk in individuals with pain may be important for suicide prevention. Treating CMDs may reduce risk for suicide in these individuals but other factors leading to higher risk for suicidal behavior should also be investigated in future studies.
Keywords: Borderline personality disorder traits; Common mental disorders; Mediation analysis; Pain; Suicidal ideation; Suicide attempt.
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