@article{ref1,
title="Risk of suicide after a self-poisoning episode: a self-controlled case series study",
journal="Social psychiatry and psychiatric epidemiology",
year="2021",
author="Xu, Zhongzhi and Yang, Jiannan and Zhang, Qingpeng and Yip, Paul S. F.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="PURPOSE: The risk of death from suicide after self-poisoning has been known to be significantly higher as compared to the general population. Nevertheless, the change in suicide risk before and after self-poisoning is still unclear. <br><br>METHODS: The database of territory-wide medical records collected by the Hospital Authority of Hong Kong was used to identify inpatients who have survived the first-ever self-poisoning but died by suicide between January 1, 2001, and December 31, 2010. A self-controlled case series (&quot;SCCS&quot;) design controlling for time-invariant patient confounders was used to explore the temporal change in suicide risk after the first self-poisoning episode. <br><br>RESULTS: During the study period, 227 people in the database died from suicide after surviving one episode of self-poisoning. A significant increase of the risk of suicide in the first 12 months after the first lifetime self-poisoning-Risk Ratio (&quot;RR&quot;) 2.88 (95% CI 1.74-4.76)-was detected. The RR gradually returned to baseline levels after the second post-poisoning period. <br><br>CONCLUSION: By within-person comparison, the net increase of the suicide risk caused by the first self-poisoning was quantitatively modeled, demonstrating that the first lifetime self-poisoning event itself is a modifiable risk factor of subsequent suicide death.<p /> <p>Language: en</p>",
language="en",
issn="0933-7954",
doi="10.1007/s00127-021-02074-0",
url="http://dx.doi.org/10.1007/s00127-021-02074-0"
}