Two-Tiered Ambulance Dispatch and Redeployment considering Patient Severity Classification Errors

Table 3

Difference in the risk level index between the ADP and greedy policies.

ALS ratio	Risk level index (ADP-greedy)
	Average	Maximum	Minimum
0.5	−0.485 (8.0%)	−1.160 (22.0%)	0.000 (0.0%)
0.67	−0.535 (11.0%)	−0.996 (17.5%)	−0.156 (3.4%)
0.83	−0.536 (13.6%)	−0.872 (20.0%)	−0.346 (9.5%)
1	−0.389 (12.3%)	−0.467 (14.7%)	−0.314 (9.9%)
Average	−0.486 (11.2%)