Selected diseases, risks and effectiveness of medical warnings in preventing motor vehicle collisions
| Disease | Event rate* | RR (95% CI) | |
|---|---|---|---|
| At baseline | After warning | ||
| Dementia | 2.92 | 0.86 | 0.31 (0.18–0.58) |
| Stroke | 3.5 | 1.15 | 0.32 (0.19–0.60) |
| Depression | 8.75 | 3.6 | 0.38 (0.25–0.60) |
| Syncope | 5.91 | 2.95 | 0.49 (0.38–0.64) |
| Epilepsy | 5.92 | 3.23 | 0.53 (0.36–0.78) |
| Diabetes | 4.49 | 2.71 | 0.59 (0.43–0.82) |
| Sleep disorder | 6.1 | 3.85 | 0.62 (0.46–0.85) |
| Alcoholism | 7.24 | 4.91 | 0.64 (0.46–0.91) |
Note: Data adapted from Redelmeier and colleagues. (30) CI = confidence interval, RR = risk ratio.
↵* The benchmark rate in the general population is about 1.96 serious crashes per 1000 drivers annually.