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A dual machine learning-based study of the impact of DIP insurance payment reform on the medical expenses of lung cancer inpatients in hospitals of Chinese medicine
LI Lei, Tan Huawei, XU Lu, GUO Dandan, BI Shengxian, CHEN Yingchun
Health Development and Policy Research, 2025, 28(3): 358-364.   DOI: 10.12458/HDPR.202406071

检验方法 ln住院总
医疗费用
ln乙类
自付费用
乙类自付
费用占比
ln丙类费用 丙类费用
占比
控制变量
一次项
控制变量
二次项
时间固定
效应
样本量/人
Lasso −0.126 0 0.007 6 −0.632 7 0.007 1 −0.013 8 2 443
(0.039 9) (0.054 9) (0.087 7) (0.001 3) (0.003 0) 2 443
梯度提升 −0.114 5 0.021 9 −0.643 7 0.007 4 −0.015 1 2 443
(0.040 7) (0.056 5) (0.087 6) (0.001 3) (0.002 9) 2 443
神经网络 −0.133 5 0.011 9 −0.635 0 0.008 1 −0.012 9 2 443
(0.039 7) (0.055 2) (0.087 9) (0.001 5) (0.003 1) 2 443
表4 更换机器学习算法的稳健性检验结果
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