Factors influencing crash severity (i.e., none vs. minor vs. severe vs. fatal) for single-vehicle crashes. Model derived from 323,581 single-vehicle crash events (not including commercial vehicles and motorcycles) that occurred in Florida (United States) from 2006–2013.
Predictor variable | Coefficient | Standard error | P-value | Odds ratio | Lower 95% CI | Upper 95% CI |
---|---|---|---|---|---|---|
Gender – male | −0.4506 | 0.0115 | <0.0001 | 0.6373 | 0.6231 | 0.6518 |
Age | 0.0119 | 0.0004 | <0.0001 | 1.0120 | 1.0113 | 1.0127 |
Drug/Alcohol use – yes | −0.1010 | 0.0165 | <0.0001 | 0.9039 | 0.8752 | 0.9336 |
Vehicle – truck | 0.0692 | 0.0127 | <0.0001 | 1.0716 | 1.0454 | 1.0986 |
Vehicle – van | 0.0585 | 0.0273 | 0.0320 | 1.0602 | 1.0050 | 1.0986 |
Land use – urban | −0.0481 | 0.0128 | 0.0002 | 0.9530 | 0.9294 | 0.9772 |
Road – local | −0.1819 | 0.0156 | <0.0001 | 0.8337 | 0.8087 | 0.8596 |
Road – interstate | −0.3631 | 0.0168 | <0.0001 | 0.6955 | 0.6721 | 0.7188 |
Road surface – loose | −0.4175 | 0.0916 | <0.0001 | 0.6587 | 0.5505 | 0.7882 |
Road surface – water | −0.2329 | 0.0219 | <0.0001 | 0.7923 | 0.7590 | 0.8270 |
Shoulder – paved | −0.0536 | 0.0196 | 0.0062 | 0.9478 | 0.9121 | 0.9849 |
Shoulder – unpaved | 0.0655 | 0.0176 | 0.0002 | 1.0677 | 1.0315 | 1.1051 |
Light conditions – dark w/lights | −0.1988 | 0.0149 | <0.0001 | 0.8198 | 0.7961 | 0.8441 |
Light conditions – dark | −0.0791 | 0.0156 | <0.0001 | 0.9240 | 0.8961 | 0.9527 |
Light conditions – dawn/dusk | −0.0761 | 0.0266 | 0.0043 | 0.9267 | 0.8796 | 0.9764 |
Weather – cloudy | 0.1246 | 0.0164 | <0.0001 | 1.1326 | 1.0969 | 1.1695 |
Weather – low visibility | 0.1445 | 0.0548 | 0.0084 | 1.1555 | 1.0378 | 1.2865 |
Seatbelt – yes | −1.2963 | 0.0226 | <0.0001 | 0.2735 | 0.2617 | 0.2859 |
Airbag – not deployed | −1.1149 | 0.0122 | <0.0001 | 0.3279 | 0.3202 | 0.3359 |
Ejected – partially | 2.5154 | 0.1134 | <0.0001 | 12.3720 | 9.9054 | 15.4525 |
Ejected – yes | 1.8757 | 0.0538 | <0.0001 | 6.5254 | 5.8723 | 7.2512 |
Crash type – barrier | −0.6619 | 0.0191 | <0.0001 | 0.5159 | 0.4969 | 0.5355 |
Crash type – ditch | −0.1412 | 0.0223 | <0.0001 | 0.8683 | 0.8312 | 0.9070 |
Crash type – fence | −0.5793 | 0.0307 | <0.0001 | 0.5603 | 0.5276 | 0.5950 |
Crash type – no fixed object | −0.4855 | 0.0561 | <0.0001 | 0.6154 | 0.5514 | 0.6869 |
Crash type – other | −0.5622 | 0.0278 | <0.0001 | 0.5700 | 0.5397 | 0.6019 |
Crash type – parked car | −0.9448 | 0.2771 | 0.0006 | 0.3888 | 0.2258 | 0.6692 |
Crash type – pole | −0.4089 | 0.0216 | <0.0001 | 0.6644 | 0.6369 | 0.6931 |
Crash type – rollover | 0.4120 | 0.0212 | <0.0001 | 1.5099 | 1.4483 | 1.5740 |
Crash type – sign | −0.8497 | 0.0262 | <0.0001 | 0.4276 | 0.4061 | 0.4501 |
Crash type – structure | −0.9076 | 0.0361 | <0.0001 | 0.4035 | 0.3759 | 0.4331 |
Crash type – water | −0.4574 | 0.0479 | <0.0001 | 0.6329 | 0.5762 | 0.6952 |