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Clinical Characteristics of Pesticide Self-Harm as Associated with Suicide Attempt Repetition Status.

Authors
  • Huang, Wei-Chen1
  • Yen, Tzung-Hai2, 3
  • Lin, Long4
  • Lin, Chemin3, 5, 6
  • Juang, Yeong-Yuh7
  • Wang, Bi-Hwa8
  • Lee, Shwu-Hua1, 3
  • 1 Department of Psychiatry, Chang Gung Memorial Hospital, Linkou, Taiwan. , (Taiwan)
  • 2 Department of Nephrology and Clinical Poison Center, Chang Gung Memorial Hospital, Linkou, Taiwan. , (Taiwan)
  • 3 School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan. , (Taiwan)
  • 4 School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan. , (Taiwan)
  • 5 Department of Psychiatry, Chang Gung Memorial Hospital, Keelung, Taiwan. , (Taiwan)
  • 6 Community Medicine Research Center, Chang Gung Memorial Hospital, Keelung, Taiwan. , (Taiwan)
  • 7 Department of Psychiatry, Koo Foundation Sun Yat-Sen Cancer Center, Taipei, Taiwan. , (Taiwan)
  • 8 School of Nursing, College of Medicine, Chang Gung University, Taoyuan, Taiwan. , (Taiwan)
Type
Published Article
Journal
Neuropsychiatric Disease and Treatment
Publisher
Dove Medical Press
Publication Date
Jan 01, 2020
Volume
16
Pages
1717–1726
Identifiers
DOI: 10.2147/NDT.S258475
PMID: 32764947
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Previous suicide behavior predicts future suicide risk. Studies of suicide repetition are important for suicide prevention. This study examined the clinical characteristics and psychiatric comorbidities of pesticide self-harm as associated with suicide attempt repetition status. This retrospective, observational study included patients admitted to a medical center in northern Taiwan between 2000 and 2015 following suicide attempts by pesticide. Diagnoses were made by a consultation-liaison psychiatry team based on the DSM IV-TR criteria. Independent samples t-test was used to analyze the quantitative variables and Pearson's Chi-squared test with a Bonferroni adjustment for categorical variables. Univariate binary logistic regression analysis was conducted to determine the predictors for repeated suicide attempt and multivariate binary logistic regression analysis to identify significant associated factors. Among 151 patients, organophosphate pesticides were the most used (80.8%). The average age was 52.9±17.2 years. Most patients were married males from rural areas, with depressive disorder most often diagnosed (40.4%). Nearly one-third of them were suicide repeaters (n=43, 28.5%); these patients were less likely to be married (53.5%, p=0.001), had previously used psychiatric services (72.1%, p<0.001) and chose complex suicide (46.5%, p=0.014) more often compared to nonrepeaters. No significant differences were found between repeaters and nonrepeaters regarding psychiatric comorbidities. Multivariate logistic regression analysis revealed that marital status (odds ratio: 2.916, 95% confidence interval: 1.234-6.891, p=0.015) and previous psychiatric services usage (odds ratio: 6.897, 95% confidence interval: 3.012-15.625, p<0.001) were significant risk factors associated with suicide repetition. Pesticide suicide repeaters were characterized by less likely to be married and more likely to use psychiatric services before suicide attempts. These features help ensuring that the needs of people who have made a suicide attempt are addressed, and it reduces the likelihood of repetition. © 2020 Huang et al.

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