Effects of Vertical Integration Reform on Primary Healthcare Institutions in China: Evidence From a Longitudinal Study.

Shasha Yuan,Fengmei Fan,Dawei Zhu

doi:10.34172/ijhpm.2021.93

Abstract

Integrated care is a global trend in international healthcare reform, particularly for piloting vertical integration involving hospitals and primary healthcare institutions (PHIs). However, evidence regarding the impact of vertical integration on primary healthcare has been mixed and limited. Our study aims to evaluate the empirical effects of vertical integration reform on PHIs in China, and examines variations across integration intensity (tight integration vs. loose collaboration). This study used a longitudinal design. The time-varying difference-in-difference (DID) method with a fixed-effect model for panel data was adopted. A total of 370 PHIs in the eastern, central, and western areas of China from 2009 to 2018 were covered. Outcome measures included the indicators at three dimensions regarding inpatient and outpatient service volume, patient flow between PHIs and hospitals and quality of chronic disease care (hypertension and diabetes). Significant increases in absolute (the number) and relative (the ratio between PHIs and hospitals) volume of inpatient admissions have been found after reform under tight integration, peaking at 183% and 15.0% respectively, in the third reform year. The quality of hypertension and diabetes care (by indicators of control rate of blood pressure and blood glucose) showed significant improvements under both types of vertical integration after reform. It was much more distinct for the PHIs under tight integration, which had the most significant increase of 34.0% and 22.8% under tight integration for the control rate of hypertension and diabetes compared to the peak of 21.2% and 22.1% respectively under loose collaboration. Our findings suggest that vertical integration (especially tight integration) in China significantly contributed to strengthening primary healthcare in terms of inpatient services and quality of hypertension and diabetes care, providing empirical evidence to other countries on integrating primary healthcare-based health systems.

Highlights

Integrated care is a global trend in international healthcare reform, which has attracted considerable attention as an essential path to developing better and more cost-effective healthcare systems.[1]
This study examined the effects of vertical integration reform on primary healthcare institutions (PHIs) in China, providing significant empirical evidence from developing countries and providing valuable guidance to strengthen integrated primary care-based health systems in practice
Our analysis revealed that both types of vertical integration had a significantly positive effect on quality of hypertension care and diabetes care; tight integration had significantly increased the number of inpatient admissions at PHIs and inpatient flow between PHIs and hospitals while no significant effects were observed for these indicators at the PHIs after loose collaboration

Summary

Introduction

Integrated care is a global trend in international healthcare reform, which has attracted considerable attention as an essential path to developing better and more cost-effective healthcare systems.[1] owing to its multiple dimensions and various scopes, it is challenging to define a uniform concept of integration.[2] Studies concerning the impacts of integration differ across settings and countries. In high-income countries, some evidence indicates that integrated care models produce better patient experience but play a small role in improving health outcomes.[3,4,5] The findings on cost-effectiveness are contradictory, when integrated care experiences and outcomes in different countries are compared.[4] Notably, huge variations are found in the integration forms, approaches, and scopes between high-income countries and low-and middle-income countries. A comprehensive review conducted by MounierJack et al showed that evidence on integrated care outcomes, from low-and middle-income countries, was scant.[2]

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