2007 National Roadside Survey of Alcohol and Drug Use by Drivers

2007 National Roadside Survey of Alcohol and Drug Use by Drivers: Drug ResultsTable 87. Drug Prevalence by Age (Blood)AgeN(Unweighted)% Drug Positive(Weighted)16-20 459 20.5%21-34 1,372 15.2%35-44 625 10.7%45-64 697 11.2%65+ 91 6.0%Overall 3,244 14.0%Comparisons between gender within age group (Table 88) showed that drug prevalence amongmale drivers ages 16-20 was significantly higher than female drivers ages 16-20 (p < .01).Further, drug prevalence among male drivers aged 21-34 was also significantly higher than thesame-aged female counterparts (p < .05).Among drivers aged 45-64, however, drug prevalencewas higher in females than in males (p < .01).Table 88. Drug Prevalence by Age and Gender (Blood)GenderMalesFemalesAgeN(Unweighted)% Drug Positive(Weighted)16-20 301 22.8%21-34 825 16.9%35-44 368 11.2%45-64 413 8.3%65+ 61 6.0%Overall Males 1,968 14.6%16-20 158 16.5%21-34 547 12.2%35-44 254 10.5%45-64 283 16.7%65+ 30 5.8%Overall Females 1,272 13.0%Comparing drug prevalence between race/ethnicity (Table 89), Asian drivers were significantlyless likely to be drug positive (1.3%) than drivers who identified themselves as AfricanAmerican, Hispanic, White, or Other (p < .01).Table 89. Drug Prevalence by Race/Ethnicity (Blood)Race/EthnicityN(Unweighted)% Drug Positive(Weighted)African American 569 16.8%Asian 87 1.3%Hispanic 585 10.0%White 1,836 15.5%Other 165 19.7%Overall 3,242 14.0%Race/Ethnic groups other than “Hispanic” are always “non-Hispanic.”78