Proportion of drivers in fatal crashes with a BAC of 0.10% or higher before and after the passage of 0.08% legal blood alcohol limit in six states
| 0.08% Law states and comparison states | Proportion before 0.08% law (n) | Proportion after 0.08% law (n) | % Change in proportion (RR) | Ratio of the RRs (95% CI) |
|---|---|---|---|---|
| BAC = blood alcohol content; CI = confidence interval; RR = relative risk. | ||||
| Kansas (0.08%) | 0.24 (649/2723) | 0.19 (574/3068) | −22% (0.78) | 0.96 (0.85 to 1.10) |
| Oklahoma | 0.23 (928/4114) | 0.18 (885/4821) | −19% (0.81) | |
| North Carolina (0.08%) | 0.20 (1847/9381) | 0.15 (1507/9997) | −23% (0.77) | 0.95 (0.88 to 1.04) |
| Tennessee | 0.25 (1929/7594) | 0.20 (1704/8361) | −20% (0.80) | |
| Florida (0.08%) | 0.21 (3925/18499) | 0.15 (2875/19739) | −31% (0.69) | 0.93 (0.86 to 1.00) |
| Georgia | 0.21 (2012/9755) | 0.15 (1616/10585) | −26% (0.74) | |
| New Mexico (0.08%) | 0.31 (875/2841) | 0.23 (651/2782) | −24% (0.76) | 0.94 (0.83 to 1.06) |
| Colorado | 0.25 (876/3509) | 0.20 (825/4086) | −19% (0.81) | |
| New Hampshire (0.08%) | 0.23 (220/944) | 0.18 (155/851) | −22% (0.78) | 0.93 (0.75 to 1.14) |
| Connecticut | 0.28 (648/2329) | 0.23 (502/2137) | −16% (0.84) | |
| Virginia (0.08%) | 0.22 (1028/4669) | 0.19 (931/4971) | −15% (0.85) | 0.93 (0.81 to 1.07) |
| Maryland | 0.14 (501/3551) | 0.13 (469/3644) | −9% (0.91) | |
| Overall law effect | 0.94 (0.90 to 0.98) | |||