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目的:研究平均住院日的影响因素及作用强度,为中国医院合理利用医疗资源提供参考依据。方法:以2003年北京市6所三甲医院的100 259个住院病人的病案首页数据为研究对象,结合Anderson模型,运用负二项回归对住院日的影响要素进行实证分析。结果:前定变量中除了婚姻状况外,其他前定变量、使能变量、需要变量对平均住院日都有显著性影响。敏感度分析结果显示了较好的稳健性。结论:医院在制定降低平均住院日策略时需要考虑前定变量、使能变量、需要变量这些因素的影响。
Objective: To study the influencing factors and intensity of average length of stay, and provide reference for Chinese hospitals to make rational use of medical resources. Methods: The data of 100259 inpatients from 6 top three hospitals in Beijing in 2003 were used as the research object. Anderson’s model and the negative binomial regression were used to empirically analyze the influential factors of the hospitalization days. Results: In addition to marital status, the other predecessors, enabling variables and required variables had significant effects on the average length of stay. Sensitivity analysis results show good robustness. CONCLUSIONS: Hospitals need to consider the influence of such factors as predecessor variables, enabling variables, and variables in the development of a strategy to reduce average length of stay.