Abstract
Objective: This study aimed to investigate the association between suicidal ideation, antidepressive medication and the risk of a car crash resulting in serious injury. Design: This was a population-based case-control study. Cases were car drivers who were involved in crashes in which at least one occupant of their car was hospitalised or killed. Controls were selected using a cluster random sample of car drivers on the roads in the same region. Self-reported information on suicidal ideation in the 12 months prior to the crash or roadside survey, current usage of antidepressive medication as well as other crash-related risk factors was obtained from the drivers, or by proxy, using an interviewer-administered questionnaire. Setting: The study was conducted in the Auckland region of New Zealand in 1998 and 1999. Results: There was a significant association between drivers who had suicidal ideation but without current antidepressive medication and the risk of an injury crash (OR = 4.16, 95% CI = 2.14–8.10), when compared to drivers without any suicidal ideation. Conclusion: The risk of an injury crash was significantly increased for those drivers who reported to have previous or current suicidal ideation but without current antidepressant medication.
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