RWIDRiding with an Impaired Driver
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"There were noticeable increases in all three measures of alcohol-related traffic risk - RWID, DWI and DAD - when students reached the legal drinking age of 21," said Arria.
Table 6 Classification Analyses of Drinking Drivers and Riders with Impaired Drivers Actual Group Membership Predicted Group Membership N Never DWI Ever DWI Never DWI 261 216 (82.8%) 45 (17.2%) Ever DWI 65 21 (32.3%) 44 (67.7%) Percent of "grouped" cases correctly classified: 79.75% Never RWID 752 587 (78.1%) 165 (21.9%) Ever RWID 372 143 (38.4%) 229 (61.6%) Percent of "grouped" cases correctly classified: 72.60% To assist in interpretation of the discriminant analyses, means for the social context and sensation seeking measures across each group are presented in Table 2.
Two pairwise discriminant analyses distinguished drinkers who drove while impaired (DWI) from those who did not, and those who rode with an impaired driver (RWID) from those who did not.