The investigators, who published their results in the July issue of Epidemiology, found that although teenage boys started off badly, with about 20 percent more crashes per mile driven than teenage girls, males and females between ages 20 and 35 were equally at risk of being involved in a crash, and after age 35 female drivers were at greater risk of a crash than their male counterparts.
Lead author Guohua Li, MD, PhD, associate professor of Emergency Medicine at the Johns Hopkins School of Medicine, and of Health Policy and Management at the Johns Hopkins School of Public Health, said, “Although risk-taking behaviors may contribute to the excessive injury mortality among men and younger drivers, up to now age and sex discrepancies in death rates from motor vehicle crashes have not been well understood.”
The investigators determined that about half of the 3.1-fold difference between the sexes’ fatal crash involvement rates was due to the fact that males’ crashes were more severe. Another 40 percent was due to the fact that men, who on average drove many more miles than women, thus had a greater opportunity of being in a crash; and 8 percent because of gender differences in “crash incidence density,” the number of crashes per million person-miles.
http://www.sciencedaily.com/releases/1998/06/980618032130.htm