Personality Disorders in Motorcycle Injuries: a Case- control Study in Tabriz

Abstract

Purpose: The aim of the present study was to compare personality characteristics between injured and uninjured motorcyclists. Methods: This study as part of a larger case-control study was carried out on 130 motorcycle traumatic patients along with 91 control patients admitted to Shohada and Imam Reza university hospitals as the two referral specialty centers in East Azarbyjan Province of Iran in 2013. The Persian version of the motorcycle Riding behavior questionnaire (MRBQ) was used to assess riding behavior. Also, Millon Clinical Multiaxial Inventory-III was used to assess personality disorders and psychiatric syndromes. Multivariate binary logistic regression was used as the main analysis method to estimate the adjusted odds ratios of the subscales of Millon-III and risky behavior scales. The statistical analysis was conducted using Stata version 11 statistical software package. Results: Mean/median scores of the personality subscales of schizoid, alienated, obsessive-compulsive, self-abusing, schizotypal, paranoid, post-traumatic stress, thought disorders, major depression, delusional disorder in the injured group were higher than in the control group (P<0.05). However, histrionic personality disorder was observed less in the injured group than the control group (P <0.01). According to the logistic regression models obsessive-compulsive and paranoid disorders were considered to be risk factors in motorcycle injuries. Conclusion: According to the results of this study, obsessive-compulsive personality was a risk factor for motorcycle traffic injuries.