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Fig. 2 | BMC Health Services Research

Fig. 2

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. 2

Monthly trends in adjusted total expenditure per case (in log form), length of stay, and in-hospital mortality rate of hospitalized insured patients in different hospitals. Notes: A1, Monthly trends of adjusted total expenditure per case (in log form and adjusted to 2019 considering inflation using the annual consumer price index of China) in different ownerships of hospitals; A2, in different levels of hospitals. B1, Monthly trends in the adjusted average length of stay in different ownerships of hospitals; B2, in different levels of hospitals. C1, Monthly trends in adjusted in-hospital mortality rate in different ownerships of hospitals; C2, in different levels of hospitals. 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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