Analysis of the correlation of drug consumption index with DRG overspending and its threshold effect in a hospital
- VernacularTitle:某院药品消耗指数与DRG超支的相关性及阈值效应分析
- Author:
Xiangyu YANG
1
;
Lulu LI
1
;
Ziheng YU
1
;
Shaohui ZHANG
1
Author Information
1. Dept. of Pharmacy，Wuhan No.1 Hospital，Wuhan 430022，China
- Publication Type:Journal Article
- Keywords:
drug consumption index;
diagnosis related groups;
Logistic regression;
restricted cubic spline model;
threshold
- From:
China Pharmacy
2025;36(1):113-116
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To explore the correlation between drug consumption index and diagnosis related groups （DRG） overspending cases， and provide a basis for hospitals to optimize the cost structure and strengthen the refined management. METHODS Based on the data of DRG patients enrolled in a third-grade class A hospital from September to November 2023， the multivariate Logistic regression model and restricted cubic spline （RCS） model were used to analyze the correlation of drug consumption index with DRG overspending cases and its threshold effect， respectively. At the same time， rational drug use evaluation was conducted based on the drug consumption index， precise cost control and management were carried out， and the changes in the main pharmaceutical indicators of the whole hospital were analyzed before control （January-June 2023） and after control （January-June 2024）. RESULTS The results of multivariate Logistic regression analysis showed that long hospitalization days， high drug consumption index， transfer to other departments and combined diabetes mellitus were the risk factors for DRG overspending （P＜0.05）. The results of the RCS model showed that the drug consumption index had a non-linear relationship with DRG overspending. When the drug consumption index was ≥0.64， the drug consumption index was positively correlated with the risk of DRG overspending（P＜0.05）. Compared with the same period before the control， medical cost per time， drug cost per time and drug consumption index decreased significantly after the control （P＜0.01）. CONCLUSIONS The drug consumption index is a risk factor for DRG overruns， there is a non-linear relationship and threshold effect between it and DRG overruns. Each hospital can set a reasonable threshold and implement dynamic monitoring and intervention by comprehensively considering the actual drug usage， disease spectrum characteristics， and cost control targets， as well as factors such as medical quality， patient needs， and the payment capacity of medical insurance， which can effectively achieve precise control over drug usage.
