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Fig. 1 | BMC Health Services Research

Fig. 1

From: Variations in the impact of the new case-based payment reform on medical costs, length of stay, and quality across different hospitals in China: an interrupted time series analysis

Fig. 1

Monthly trends in adjusted total expenditure per case (in log form), length of stay, and in-hospital mortality rate of hospitalized insured patients. Notes: A Monthly trends in adjusted total expenditure per case (in log form and were adjusted to 2019 considering inflation using the annual consumer price index of China). B Monthly trends in the adjusted average length of stay. C Monthly trends in adjusted in-hospital mortality rate. The vertical dashed line denotes the implementation of the DIP payment reform on January 1st, 2018. The solid trend line is predicted based on segmented regression of the time series model (before the reform: January 1st, 2016 to December 31st, 2017; after the reform: January 1st, 2018 to December 31st, 2019). All interrupted time series analyses are fitted for a Prais-Winsten model with the Durbin-Waston statistic to adjust for autocorrelation. Outcomes were adjusted for the number of discharge cases, age, sex, Charlson Comorbidity Index of patients, and seasonality, with a robust standard error

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BMC Health Services Research

ISSN: 1472-6963

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