Research Article
Analyzing Traffic Crash Severity in Work Zones under Different Light Conditions
Table 6
Prediction Performance.
| | Sample | Observed | Predicted | | Injury | PDO | Percentage correct |
| | Daylight | Injury | 46 | 1134 | 3.9% | | PDO | 32 | 3609 | 99.1% | | Overall percentage | 1.6% | 98.4% | 75.8% |
| | Dark-lighted | Injury | 19 | 159 | 10.7% | | PDO | 9 | 523 | 98.3% | | Overall percentage | 3.9% | 96.1% | 76.3% |
| | Dark-not-lighted | Injury | 5 | 155 | 3.1% | | PDO | 0 | 274 | 100.0% | | Overall percentage | 1.2% | 98.8% | 64.3% |
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