fatal two-vehicle crashes. Methods Data on 14,742 culpable drivers (initiators) and 14,742
nonculpable drivers (noninitiators) involved in the same fatal two-vehicle crashes between
1993 and 2014 were obtained from the Fatality Analysis Reporting System. Multivariable
conditional logistic regression models were used to assess the association of driver use of
alcohol, marijuana, or both with fatal crash initiation with adjustment for demographic …