Table 4

Relative Risk estimates for alcohol and cannabis use 6 hours prior to injury

RR

95% CI lower

95% CI upper

no use

1.00

alcohol use only

3.08

1.77

5.34

cannabis use only

0.37

0.10

1.43

joint use of alcohol and cannabis

0.71

0.12

4.26

There were no women using cannabis in the 6 hours prior to injury and only 3 women a week ago. Therefore, only results for the total sample were reported

Gmel et al. BMC Public Health 2009 9:40   doi:10.1186/1471-2458-9-40