TABLE 2—
Effect of 2009 Illinois Alcohol Excise Tax Increase on Alcohol-Related Motor Vehicle Crashes Resulting in Driver Fatalities
| Baseline Mean Monthly Crashes, No. | Change in Monthly Crashes,a No. (95% CI) | Net change, % (95% CI) | Subgroup Difference, P | |
| Overall | 30.1 | −6.1 (−10.7, −1.37) | −19.0 (−31.3, −4.5) | |
| Age, y | .15 | |||
| < 30 | 9.9 | −2.6 (−4.7, −0.5) | −25.8 (−42.7, −4.1) | |
| ≥ 30 | 12.5 | −1.8 (−4.1, 0.5) | −11.1 (−29.0, 11.5) | |
| Gender | .13 | |||
| Male | 19.3 | −4.7 (−7.7, −1.6) | −23.5 (−35.6, −9.2) | |
| Female | 3.3 | −0.3 (−1.2, 0.6) | −5.9 (−30.1, 26.7) | |
| Alcohol concentration | .4 | |||
| Elevated (< 0.15 g/dL) | 11.6 | −1.8 (−3.8, 0.3) | −17.2 (−32.6, 1.8) | |
| Very high (≥ 0.15 g/dL) | 18.6 | −3.8 (−6.7, −0.9) | −19.9 (−32.9, −4.4) | |
| Race | .13 | |||
| White | 19.7 | −4.6 (−7.8, −1.4) | −23.4 (−36.4, −7.9) | |
| Other | 10.5 | −1.0 (−2.8, 0.7) | −10.7 (−26.4, 8.4) |
Note. CI = confidence interval.
a
Stratum-specific estimates do not sum to the overall estimate because of missing data on the stratifying variables.