Risk ratios for very high BACs in relation to drinking variables among fatally injured drivers, 1993*
| Drinking variables | Zero BAC | Very high BAC 0.15+ g/dl | Risk ratios: very high BAC | 95% Confidence interval |
|---|---|---|---|---|
| *Fatality Analysis Reporting System (FARS) and National Mortality Followback Survey, 1993. | ||||
| Convictions (FARS) | ||||
| Conviction for driving under influence or while intoxicated 3 years before crash | ||||
| Yes | 8 | 46 | 2.7 | 2.3 to 3.2 |
| No | 436 | 199 | ||
| Last month of life | ||||
| “Was X a problem drinker?”* | ||||
| Yes | 6 | 72 | 3.3 | 2.8 to 3.8 |
| No | 413 | 163 | ||
| Last year of life | ||||
| How often had 5+ drinks at one time | ||||
| 1+ times/month | 27 | 105 | 4.0 | 3.3 to 5.0 |
| <1 per month/never | 368 | 90 | ||
| Quantity-frequency category | ||||
| Heavy/very heavy | 29 | 119 | 8.1 | 5.9 to 11.1 |
| Light/non-drinker | 325 | 36 | ||
| Driving within 2 hours after having 5+ drinks | ||||
| 1+ times/month | 8 | 36 | 6.8 | 5.0 to 9.2 |
| Not drinking and driving | 345 | 47 | ||