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The article you requested is

Risk and Protective Factors for Suicide Among Patients With Methamphetamine Dependence: A Nested Case-Control Study

J Clin Psychiatry 2011;72(4):487-493
Copyright 2010 Physicians Postgraduate Press, Inc.

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Objective: Methamphetamine as a recreational drug has undergone cycles of popularity, with a recent surge worldwide since the 1990s. This study aimed to identify clinical characteristics associated with suicide mortality in patients with methamphetamine dependence by means of a nested case-control design.

Method: In a consecutive series of 1,480 inpatients with methamphetamine dependence (diagnosed according to DSM-III-R and DSM-IV criteria) admitted to a psychiatric center in northern Taiwan from January 1, 1990, through December 31, 2006, 38 deaths due to suicide were identified as cases via record linkage, and 76 controls were randomly selected using risk-set density sampling in a 2:1 ratio, matched for age, sex, and the year of index admission. A standardized chart review process was adopted to collate sociodemographic and clinical information for each study subject. Multivariate conditional logistic regression analysis was used to identify correlates of suicide among these patients.

Results: For the sociodemographic and symptom profiles at the latest admission, financial independence lowered the risk for suicide (adjusted risk ratio [ARR] = 0.33, P < .05), whereas visual hallucinations elevated the risk (ARR = 2.57, P < .05) for suicide. For the profiles during the postdischarge period, financial independence (ARR = 0.11, P < .05) remained associated with reduced risk for suicide, whereas suicide attempt (ARR = 8.78, P < .05) and depressive syndrome (ARR = 3.28, P = .059) were associated with increased risk of suicide.

Conclusions: Both protective and risk factors for suicide mortality were found among inpatients with methamphetamine dependence, and the findings have implications for clinical intervention and prevention.

J Clin Psychiatry

Submitted: May 15, 2009; accepted September 28, 2009.

Online ahead of print: September 7, 2010 (doi:10.4088/JCP.09m05360gry).

Corresponding author: Wei J. Chen, MD, ScD, Institute of Epidemiology, College of Public Health, National Taiwan University, 17 Xu-Zhou Rd, Taipei, 100, Taiwan (wjchen@ntu.edu.tw).