Unselected MVCs | MVCs with injury | |||
Rate ratio (95% CI) | p Value | Rate ratio (95% CI) | p Value | |
Patients | ||||
Presence of OSAH | 1.22 (0.92 to 2.01) | 0.12 | 3.67 (1.30 to 10.3) | 0.014 |
ESS | 1.01 (0.99 to 1.04) | 0.35 | 1.04 (0.99 to 1.09) | 0.11 |
Male sex | 0.91 (0.66 to 1.25) | 0.55 | 0.59 (0.32 to 1.09) | 0.09 |
Age | 1.00 (0.99 to 1.01) | 0.69 | 0.99 (0.97 to 1.02) | 0.50 |
BMI | 1.01 (1.00 to 1.02) | 0.008 | 0.99 (0.96 to 1.03) | 0.69 |
Per 100 km driven/week | 1.09 (1.03 to 1.16) | 0.003 | 1.12 (1.00 to 1.25) | 0.053 |
Alcohol use* | 1.01 (1.00 to 1.03) | 0.12 | 1.05 (1.02 to 1.07) | 0.0014 |
Sedative use | 0.79 (0.49 to 1.28) | 0.34 | 0.96 (0.41 to 2.23) | 0.92 |
Caffeine use† | 0.99 (0.98 to 1.00) | 0.15 | 0.99 (0.5 to 1.3) | 0.19 |
Controls | ||||
Male sex | 1.55 (1.00 to 2.41) | 0.049 | 2.39 (0.71 to 8.08) | 0.13 |
Age | 0.99 (0.98 to 1.01) | 0.38 | 0.95 (0.92 to 0.99) | 0.006 |
BMI, body mass index; ESS, Epworth Sleepiness Scale; MVC, motor vehicle crash; OSAH, obstructive sleep apnoea/hypopnoea.
*For every one increase in alcohol use per week (ie, bottle/can/glass of beer, 4 oz wine or drink/shot of liquor).
†For every one cup increase in coffee use per week.