title: Life events: a complex role in the timing of suicidal behavior among depressed patients.
abstract: Suicidal behavior is often conceptualized as a response to overwhelming stress. Our model posits that given a propensity for acting on suicidal urges, stressors such as life events or major depressive episodes (MDEs) determine the timing of suicidal acts. Depressed patients (n=415) were assessed prospectively for suicide attempts and suicide, life events and MDE over 2 years. Longitudinal data were divided into 1-month intervals characterized by MDE (yes/no), suicidal behavior (yes/no) and life event scores. Marginal logistic regression models were fit, with suicidal behavior as the response variable and MDE and life event score in either the same or previous month, respectively, as time-varying covariates. Among 7843 person-months, 33% had MDE and 73% had life events. MDE increased the risk for suicidal behavior (odds ratio (OR)=4.83, P⩽0.0001). Life event scores were unrelated to the timing of suicidal behavior (OR=1.06 per 100 point increase, P=0.32), even during a MDE (OR=1.12, P=0.15). However, among those without borderline personality disorder (BPD), both health- and work-related life events were key precipitants, as was recurrent MDE, with a 13-fold effect. The relationship of life events to suicidal behavior among those with BPD was more complex. Recurrent MDE was a robust precipitant for suicidal behavior, regardless of BPD comorbidity. The specific nature of life events is key to understanding the timing of suicidal behavior. Given unanticipated results regarding the role of BPD and study limitations, these findings require replication. Of note, that MDE, a treatable risk factor, strongly predicts suicidal behaviors is cause for hope.
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Oquendo
authors.affiliation: Veterans Affairs Medical Center, Bronx, NY, USA.
authors.forename: M M
authors.initials: MM
authors.lastname: Perez-Rodriguez
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: E
authors.initials: E
authors.lastname: Poh
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: G
authors.initials: G
authors.lastname: Sullivan
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: A K
authors.initials: AK
authors.lastname: Burke
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: M E
authors.initials: ME
authors.lastname: Sublette
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Mann
authors.affiliation: Department of Psychiatry, Columbia University College of Physicians & Surgeons, New York, NY, USA.
authors.forename: H
authors.initials: H
authors.lastname: Galfalvy
mesh_terms: D000328:Adult; D001883:Borderline Personality Disorder / Q000150:complications / Q000523:psychology*; D003865:Major Depressive Disorder / Q000150:complications / Q000523:psychology*; D005260:Female; D006801:Humans; D008016:Life Change Events; D008137:Longitudinal Studies; D008297:Male; D016017:Odds Ratio; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D012307:Risk Factors; D013406:Suicide, Attempted / Q000523:psychology*; D013997:Time Factors; D055815:Young Adult