Research Article
Analysis of Work-Zone Crashes Using the Ordered Probit Model with Factor Analysis in Egypt
Table 8
Ordered probit model estimation results.
| | | | Estimate | Std. Error | Wald | DF | Sig () | 95 Confidence Interval | | | | Lower Bound | Upper Bound |
| | Threshold | No injury | -.738 | .076 | 93.541 | 1 | .000 | -.887 | -.588 | | Injury | 1.086 | .085 | 161.719 | 1 | .000 | .919 | 1.254 |
| | Advanced work-zone information factor | .161 | .062 | 6.711 | 1 | .010 | .039 | .284 | | Visibility and traffic factor | .108 | .062 | 3.057 | 1 | .080 | -.013 | .230 | | Crash characteristic factor | -.223 | .064 | 12.275 | 1 | .000 | -.349 | -.098 | | Driver skills factor | -.140 | .063 | 4.990 | 1 | .025 | -.263 | -.017 | | Weather condition factor | .132 | .062 | 4.478 | 1 | .034 | .010 | .253 |
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