Journal
PREVENTIVE MEDICINE
Volume 57, Issue 3, Pages 152-161Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ypmed.2013.05.001
Keywords
Bicycling; Wounds and injuries; Incidence; Risk; Epidemiology; Cohort studies; Medical record linkage
Funding
- Health Research Council of New Zealand [09/142]
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Objective. To estimate the incidence and risk of medically or police attended bicycle crashes in a prospective cohort study in New Zealand. Method. The Taupo Bicycle Study involved 2590 adult cyclists recruited from the country's largest cycling event in 2006 and followed over a median period of 4.6 years through linkage to four administrative data-bases. Incidence rates with Poisson distribution confidence intervals were computed and Cox regression modelling for repeated events was performed. Results. The 66 on-road crashes and 10 collisions per 1000 person-years corresponded to 240 crashes and 38 collisions per million hours spent road cycling. The risk increased by 6% and 8% respectively for an extra cycling hour each week. There were 50 off-road crashes per 1000 person-years. Residing in urban areas and in Auckland (region with the lowest level of cycling), riding in a bunch, using a road bike and experiencing a previous crash predicted a higher risk. Habitual use of conspicuity aids appeared to lower the risk. Conclusion. The risk is higher in urban areas and where cycling is less common, and increased by bunch riding and previous crashes. These findings alongside the possible protective effect of conspicuity aids suggest promising approaches to improving cycle safety. (C) 2013 The Authors. Published by Elsevier Inc. All rights reserved.
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