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Herfindahl-Hirschman Index (HHI) for hospital markets in Sichuan, China, 2009 to 2017.
Note. Point estimates of HHI with 95% confidence interval were presented in this picture. When calculating HHI within public (private) hospitals, we just included public (private) hospitals and ignored private (public) hospitals; when calculated HHI between ownership, we regarded all the private or public hospitals in the seam hospital market as a whole.
