An investigation of bias following data linkage of hospital admissions data to police road traffic crash reports

Cryer, Colin and Westrup, Sylvia and Cook, A.C. and Ashwell, V. and Bridger, P. and Clarke, C. (2001) An investigation of bias following data linkage of hospital admissions data to police road traffic crash reports. Injury Prevention, 7 (3). pp. 234-241. ISSN 1353-8047. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Research question—Does a database of hospital admission data linked to police road traffic accident (RTA) reports produce less biased information for the injury prevention policymaker, planner, and practitioner than police RTA reports alone? Design—Data linkage study. Study population—Non-fatal injury victims of road traffic crashes in southern England who were admitted to hospital. Data sources—Hospital admissions and police RTA reports. Main outcome measures—The estimated proportion of road traffic crashes admitted to hospital that were included on the linked database; distributions by age, sex, and road user groups: (A) for all RTA injury admissions and (B) for RTA serious injury admissions defined by length of stay or by nature of injury. Results—An estimated 50% of RTA injury admissions were included on the linked database. When assessing bias, admissions data were regarded as the "gold standard". The distributions of casualties by age, sex, and type of road user showed major differences between the admissions data and the police RTA injury data of comparable severity. The linked data showed smaller differences when compared with admissions data. For RTA serious injury admissions, the distributions by age and sex were approximately the same for the linked data compared with admissions data, and there were small but statistically significant differences between the distributions across road user group for the linked data compared with hospital admissions. Conclusion—These results suggest that investigators could be misinformed if they base their analysis solely on police RTA data, and that information derived from the linked database is less biased than that from police RTA data alone. A national linked dataset of road traffic crash data should be produced from hospital admissions and police RTA data for use by policymakers, planners and practitioners.

Item Type: Article
Uncontrolled keywords: data linkage; hospital records; police road traffic crash reports; bias (epidemiology)
Subjects: H Social Sciences > H Social Sciences (General)
H Social Sciences > HM Sociology
Divisions: Faculties > Social Sciences > School of Social Policy Sociology and Social Research > Centre for Health Services Studies
Depositing User: Paula Loader
Date Deposited: 21 Mar 2009 16:18
Last Modified: 13 Jun 2014 15:43
Resource URI: (The current URI for this page, for reference purposes)
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