Table 5 Estimated odds ratios and 95% confidence intervals of fatal crash involvement according to driver BAC level and marijuana testing results in states that tested at least 80% of All fatally injured drivers, selected time periods on Fridays and Saturdays, July 20 through December 1, 2006, 2007 and 2008
From: Interaction of marijuana and alcohol on fatal motor vehicle crash risk: a case–control study
Testing Result | |||||
|---|---|---|---|---|---|
Marijuana | BAC level | Crude OR | 95% CI | aAdjusted OR | 95% CI |
Negative | 0 | 1.00 | Reference | 1.00 | Reference |
Positive | 0 | 1.58 | 1.07, 2.35 | 1.76 | 1.17, 2.66 |
Negative | 0.01-0.07 | 2.59 | 1.88, 3.55 | 2.66 | 1.91, 3.70 |
Positive | 0.01-0.07 | 4.10 | 2.41, 6.96 | 4.69 | 2.69, 8.19 |
Negative | ≥0.08 | 57.99 | 45.80, 73.43 | 58.33 | 44.91, 75.75 |
Positive | ≥0.08 | 91.75 | 56.41, 149.22 | 102.94 | 61.13, 173.32 |