However, these rates are for our single male sample driver, so it is important to remember that your rates will differ based on your vehicle, driving record, and other factors. (valuepenguin.com)
The study notes some limitations, including a primarily male sample and a lack of specific information regarding past 30 - day use of other illicit drugs and alcohol. (sciencedaily.com)
However, it seems that most effects were robust enough to be found even in the relatively small male samples. (interpersona.psychopen.eu)