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Table 2 Estimated relative risks of alcohol and marijuana use in fatally injured drivers 1999 to 2010 associated with MLDA

From: Effects of minimum legal drinking age on alcohol and marijuana use: evidence from toxicological testing data for fatally injured drivers aged 16 to 25 years

Drug

RR

95% confidence interval

Alcohol only

1.14

1.02 to 1.28

Marijuana only

0.76

0.53 to 1.10

Alcohol and marijuana

1.22

0.90 to 1.66

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Injury Epidemiology

ISSN: 2197-1714