Demographic and Lifestyle Factors
Table 2 shows associations between various demographic and lifestyle factors and the measures of driving after using marijuana and driving after having 5 or more drinks for the years 2009 to 2011 combined (to increase the numbers of cases in subgroups). We treated all the independent variables as categorical to allow presentation of the percentages of each category reporting the behavior. Unadjusted and adjusted odds ratios (ORs) are shown; the former are from regressions with only the indicated variable and the latter are from regressions with all independent variables.