| Variables | Injury crashes vs. PDO crashes | Fatal crashes vs. PDO crashes | Estimate | P value | Odds ratio (95% CI) | Estimate | P value | Odds ratio (95% CI) |
| Intercept | -2.749 | 0.000 | ā | -7.272 | 0.000 | ā |
| Lighting condition (relative to daylight) |
| Dawn | - | - | - | - | - | - | Dusk | - | - | - | - | - | - | Darkness | 0.158 | 0.029 | 1.171(1.017, 1.350) | 0.923 | 0.046 | 2.516(1.016, 6.230) | Darkness, lighted road | 0.288 | 0.000 | 1.333(1.245, 1.427) | 0.952 | 0.000 | 2.590(1.523, 4.407) |
| Road surface condition (relative to dry) |
| Wet | - | - | - | - | - | - | Snow or slush | -0.342 | 0.000 | 0.710(0.610, 0.827) | - | - | - |
| Number of units involved (relative to one unit) |
| 2 units | - | - | - | - | - | - | More than 2 units | 1.454 | 0.000 | 4.279 (2.952, 6.203) | 1.737 | 0.025 | 5.678(1.240, 25.994) |
| Crash type (relative to fixed object crash) |
| Head on | - | - | - | - | - | - | Sideswipe opposite direction | -0.919 | 0.000 | 0.399(0.262, 0.607) | - | - | - | Pedal cyclist | 2.505 | 0.000 | 12.247(8.401, 17.853) | - | - | - | Pedestrian | 3.093 | 0.000 | 22.037(15.118, 32.123) | 1.986 | 0.015 | 7.288(1.474, 36.030) | Angle | -0.481 | 0.009 | 0.618(0.432, 0.885) | -2.566 | 0.002 | 0.077(0.015, 0.389) | Turning | -0.808 | 0.000 | 0.446(0.312, 0.637) | -2.870 | 0.001 | 0.057(0.011, 0.287) | Sideswipe same direction | -2.049 | 0.000 | 0.129(0.089, 0.186) | -3.863 | 0.000 | 0.021(0.003, 0.151) | Parked motor vehicle | -1.649 | 0.000 | 0.192(0.133, 0.277) | -1.927 | 0.010 | 0.146(0.033, 0.636) | Rear end | -1.286 | 0.000 | 0.276(0.193, 0.395) | -3.881 | 0.000 | 0.021(0.004, 0.115) |
| Trafficway type (relative to non-divided road) |
| Divided with median barrier | 0.211 | 0.000 | 1.235(1.165, 1.310) | - | - | - | One-way | -0.237 | 0.000 | 0.789(0.715, 0.871) | - | - | - | Parking lot | -1.189 | 0.000 | 0.305(0.253, 0.366) | - | - | - |
| Crash damage in dollar value (relative to $500 or less) |
| $501 - $1500 | - | - | - | - | - | - | Over $1500 | 1.225 | 0.000 | 3.405(3.035, 3.821) | 2.351 | 0.000 | 10.494(3.653, 30.144) |
| Crash hour (relative to non-peak hour) |
| AM peak hour | - | - | - | - | - | - | PM peak hour | -0.194 | 0.000 | 0.823(0.764, 0.887) | -1.099 | 0.019 | 0.333(0.133, 0.837) |
| Crash day of week (relative to weekday) |
| Weekend | 0.120 | 0.000 | 1.128(1.060, 0.199) | - | - | - |
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