对关系到住院率与社区死亡率的获取医疗服务机会的比率也进行了计算，并用来评估监测的灵敏度。
Access to care ratios relating hospitalization rates to community mortality rates were computed and used to estimate surveillance sensitivity.
仿真结果表明：双比率算法较单比率算法，具有外部故障高稳定性，而在内部高阻故障时，也有很高的灵敏度。
Simulation results indicate that dual slope algorithm is of high stability during external faults and is very sensitive to high impedance internal faults.
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