Impact of Enhanced Outpatient Pooling Level on Healthcare Utilization, Costs and Fund Expenditures in China: An Interrupted Time Series Analysis

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Interrupted time series analysis reveals increased outpatient visits and reduced OOP costs among UEBMI enrollees.

After enhancing the outpatient pooling level, monthly outpatient visits per capita increased significantly among UEBMI enrollees.
The medical cost per outpatient visit rose by 0.6% per month, indicating increased spending in healthcare.
Out-of-pocket costs decreased immediately by nearly 24%, supporting better access to outpatient services.
Despite initial benefits, long-term sustainability of outpatient fund expenditures showed signs of decrease over time.

Wu et al. (2025) studied this question.

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