Methods: The cases are classified by the case classification software, and then, use four type case distribution and CD case rate separately correct the average jength of stay.
方法：用病例分型管理软件进行病例分型，用CD型率和病例四型分布对科室平均住院日进行校正。
Methods: The cases are classified by the case classification software, and then, use four type case distribution and CD case rate separately correct the average jength of stay.
方法：用病例分型管理软件进行病例分型，用CD型率和病例四型分布对科室平均住院日进行校正。
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