Driver ageing does not cause higher accident rates per km |
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| Institution: | 1. Department of Psychology, Swedish School of Social Science, University of Helsinki, P.O. Box 16 (Topeliusgatan 16), FIN-00014 Helsinki, Finland;2. Swedish National Road and Transport Research Institute, SE-58195 Linköping, Sweden;3. Department of Psychology, University of Jyväskylä, Finland;4. Department of Medical Gerontology, Trinity College Dublin, Ireland;1. Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall, West Lafayette, IN 47907-2051, USA;2. School of Highway, Chang’an University, Xi’an 710064, PR China;1. University of Pennsylvania, School of Nursing, Center for Global Women''s Health, Center for Health Equity Research, Claire Fagin Hall, 418 Curie Boulevard, Philadelphia, PA 19104-4217, USA;2. Center for Injury Research and Prevention, The Children''s Hospital of Philadelphia, 3535 Market Street, Suite 1150, Philadelphia, PA 19104, USA;3. Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine at the University of Pennsylvania, 423 Guardian Drive, Philadelphia, PA 19104, USA;4. Division of General Pediatrics, Perelman School of Medicine at the University of Pennsylvania, 295 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA 19104, USA;5. National Science Foundation Center for Child Injury Prevention Studies, The Children''s Hospital of Philadelphia, 3535 Market Street, Suite 1150, Philadelphia, PA 19104, USA;1. BMW Group, 80788 München, Germany;2. Technische Universität Chemnitz, 09107 Chemnitz, Germany;1. Connecticut Transportation Safety Research Center, University of Connecticut, 270 Middle Turnpike, Unit 5202, Storrs, CT 06269-5202, USA;2. Department of Civil and Environmental Engineering, University of Connecticut, 261 Glenbrook Road, Unit 3037, Storrs, CT 06269-3037, USA;3. Department of Statistics, University of Connecticut, AUST 333, 215 Glenbrook Road, Storrs, CT 06269, USA;4. Connecticut Transportation Safety Research Center, Department of Civil and Environmental Engineering, University of Connecticut, Longley Building Room 144, Storrs, CT 06269, USA |
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| Abstract: | Based on Finnish survey data, older (65+, n=1559) and younger (26–40, n=310) drivers’ accident rates were compared. In accordance with earlier studies, the rates were similar per driver (0.1) but there was a non-significant trend towards older drivers having more accidents per distance driven (10.8 vs. 8.3 per 1 million km). However, when the accidents-per-km comparison was made in groups matched for yearly exposure, there is no evidence for higher risk with increasing age. In both age groups, risk per km decreased with increasing yearly driving distance. We suggest that the previous perception of an age-related risk increase of accidents per distance driven arises from a failure to control for low mileage bias at all ages. |
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