Parameters | Estimations | Standard error | Confidence interval | |
|
|
| Lower bound | Upper bound |
(Mean efficiency index) | 0.7054 | 0.2760 | 0.1645 | 1.2463 |
(Fatal risk) | 0.1525 | 0.0626 | 0.0298 | 0.2752 |
(Serious risk) | 0.1605 | 0.0639 | 0.0353 | 0.2858 |
(Slight risk) | 0.6870 | 0.0807 | 0.5287 | 0.8452 |