@article{ref1,
title="Misconceptions regarding case-control studies of bicycle helmets and head injury",
journal="Accident analysis and prevention",
year="2006",
author="Cummings, P. and Rivara, Frederick P. and Thompson, D. C. and Thompson, R. S.",
volume="38",
number="4",
pages="636-643",
abstract="A number of published case-control studies have reported that bicycle helmets are associated with a reduced risk of head injury and brain injury among bicyclists who crashed. A paper in this journal offered several criticisms of these studies and of a systematic review of these studies. Many of those criticisms stem from misconceptions about the studies that have been done and about case-control studies in general. In this manuscript we review case-control study design, particularly as it applies to bicycle helmet studies, and review some aspects of the analysis of case-control data.   <p> </p>",
language="en",
issn="0001-4575",
doi="10.1016/j.aap.2005.12.007",
url="http://dx.doi.org/10.1016/j.aap.2005.12.007"
}