Mental health and behavioural factors involved in road traffic crashes by young adults: analysis of the Raine Study

Author:

Tait RobertORCID,Ivers Rebecca,Marino Jennifer L,Doherty Dorota,Graham Petra LORCID,Cunich Michelle,Sanci Lena,Steinbeck Katharine,Straker LeonORCID,Skinner S Rachel

Abstract

BackgroundRoad traffic crashes (RTC) are a leading cause of mortality and morbidity in young people. Severe mental health and behavioural conditions increase the likelihood of RTC, as do a range of driving-risk activities.MethodWe used data from the Raine Study, a prebirth cohort from Perth, Australia, to assess the relationship between measures of common mental health or behavioural conditions (Child Behavior Checklist Internalising and Externalising scores) at age 17 and subsequent RTC by 27 years, controlling for substance use and driving-risk activities.ResultsBy 27 years of age, of 937 participants, 386 (41.2%) reported zero crashes and 551 (58.8%) reported ≥1 crashes. In the baseline Poisson model, increased Externalising scores (eg, aggression and delinquency) were associated with increased RTC (incidence rate ratio (IRR)=1.02, 95% CI 1.01 to 1.02): increased Internalising scores (eg, anxiety and depression) were associated with fewer RTC (IRR=0.99, 95% CI 0.98 to 1.00). In the fully adjusted model, the mental health measures were not significant (Externalising IRR=1.01, 95% CI 0.99 to 1.02: Internalising IRR=0.99, 95% CI 0.99 to 1.00). Risky driver activities, such as falling asleep while driving (IRR=1.34), more frequent use of a hands-free telephone (IRR=1.35) and more frequent hostility towards other drivers (IRR=1.30) increased the rate of RTC.ConclusionMeasures of mental health scores at age 17 were not predictive of subsequent RTC, after adjusting for measures of driving-risk activities. We need to better understand the determinants of externalising and risky driving behaviours if we are to address the increased risk of RTC.

Funder

Raine Medical Research Foundation

NHMRC

Murdoch University

Telethon Kids Institute

University of Notre Dame Australia

Women and Infants Research Foundation

Edith Cowan University

University of Western Australia

Curtin University

Australian Government

Publisher

BMJ

Subject

Public Health, Environmental and Occupational Health,Epidemiology

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