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目的:对心脏病手术患者住院费用进行DRGs组合,为制定我国DRGs支付规范提供参考。方法:利用R语言rpart包,建立回归树模型,对2014年河南省39所综合医院的4 216例心脏病手术患者病例首页数据进行分析。结果:模型共产生9个DRGs分组,RIV值为0.546 8,住院费用组间差异通过K-S检验,不存在过拟合情况,手术操作类型是影响心脏手术住院病人分组的最重要的因素。结论:利用回归树模型进行DRGs组合效果良好。
OBJECTIVE: To make DRGs combination of hospitalization costs for cardiac surgery patients, and to provide reference for formulating DRGs payment norms in our country. Methods: Using R language package, a regression tree model was established to analyze the data of 4 216 cases of heart disease patients in 39 general hospitals in Henan Province in 2014. Results: A total of 9 DRGs were generated in the model with a RIV value of 0.546 8. K-S test showed no difference between hospitalization costs. There was no overfit, and the type of operation was the most important factor influencing the grouping of inpatients undergoing cardiac surgery. Conclusion: The regression tree model for DRGs combination works well.