Research Article
Two-Tiered Ambulance Dispatch and Redeployment considering Patient Severity Classification Errors
Table 2
Risk level index of each ambulance operation policy, ALS ratio, undertriage rate α, and overtriage rate β.
| ALS ratio | Undertriage rate α | Overtriage rate β | 0 | 0.1 | 0.2 | 0.3 | 0.4 | Greedy | ADP | Greedy | ADP | Greedy | ADP | Greedy | ADP | Greedy | ADP |
| 0.5 | 0 | 5.12 | 3.99 | 5.26 | 4.21 | 5.48 | 4.32 | 5.57 | 4.61 | 5.68 | 4.89 | 0.1 | 5.58 | 5.11 | 5.81 | 5.31 | 5.91 | 5.60 | 6.12 | 5.93 | 6.19 | 6.12 | 0.2 | 5.98 | 5.75 | 6.34 | 5.97 | 6.30 | 6.12 | 6.49 | 6.45 | 6.62 | 6.67 | 0.3 | 6.50 | 6.26 | 6.74 | 6.38 | 6.73 | 6.47 | 6.97 | 6.69 | 7.10 | 6.79 | 0.4 | 7.00 | 6.45 | 7.19 | 6.49 | 7.41 | 6.68 | 7.46 | 6.78 | 7.52 | 6.90 | 0.67 | 0 | 4.07 | 3.43 | 4.13 | 3.45 | 4.18 | 3.52 | 4.20 | 3.59 | 4.30 | 3.70 | 0.1 | 4.47 | 3.99 | 4.47 | 4.14 | 4.51 | 4.23 | 4.60 | 4.32 | 4.61 | 4.46 | 0.2 | 4.78 | 4.38 | 4.77 | 4.47 | 4.89 | 4.40 | 4.90 | 4.52 | 4.93 | 4.68 | 0.3 | 5.12 | 4.45 | 5.06 | 4.60 | 5.24 | 4.72 | 5.16 | 4.65 | 5.32 | 4.75 | 0.4 | 5.43 | 4.55 | 5.49 | 4.75 | 5.48 | 4.70 | 5.69 | 4.69 | 5.59 | 4.84 | 0.83 | 0 | 3.47 | 2.99 | 3.47 | 3.03 | 3.57 | 3.09 | 3.55 | 3.12 | 3.58 | 3.09 | 0.1 | 3.66 | 3.31 | 3.78 | 3.29 | 3.77 | 3.41 | 3.77 | 3.38 | 3.79 | 3.43 | 0.2 | 3.90 | 3.39 | 3.88 | 3.40 | 3.90 | 3.45 | 3.89 | 3.43 | 3.95 | 3.47 | 0.3 | 4.03 | 3.43 | 4.08 | 3.47 | 4.04 | 3.47 | 4.08 | 3.56 | 4.08 | 3.46 | 0.4 | 4.17 | 3.46 | 4.23 | 3.45 | 4.17 | 3.54 | 4.30 | 3.46 | 4.36 | 3.49 | 1 | 0 | 3.18 | 2.71 | 3.17 | 2.72 | 3.19 | 2.8 | 3.15 | 2.76 | 3.16 | 2.73 | 0.1 | 3.18 | 2.74 | 3.20 | 2.79 | 3.17 | 2.8 | 3.17 | 2.77 | 3.18 | 2.80 | 0.2 | 3.18 | 2.74 | 3.18 | 2.76 | 3.17 | 2.83 | 3.17 | 2.77 | 3.17 | 2.83 | 0.3 | 3.18 | 2.78 | 3.17 | 2.80 | 3.17 | 2.80 | 3.16 | 2.78 | 3.17 | 2.78 | 0.4 | 3.14 | 2.81 | 3.16 | 2.80 | 3.16 | 2.85 | 3.17 | 2.82 | 3.16 | 2.79 |
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Note. is less than 0.001 in all experiments except ; not significant. |