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China implemented the public hospital reform in 2012.This study utilized bootstrapping data envelopment analysis (DEA) to evaluate the technical efficiency (TE) and productivity of county public hospitals in East,Central,and West China after the 2012 public hospital reform.Data from 127 county public hospitals (39,45,and 43 in East,Central,and West China,respectively) were collected during 2012-2015.Changes of TE and productivity over time were estimated by bootstrapping DEA and bootstrapping Malmquist.The disparities in TE and productivity among public hospitals in the three regions of China were compared by Kruskal-Wallis H test and Mann-Whitney U test.The average bias-corrected TE values for the four-year period were 0.6442,0.5785,0.6099,and 0.6094 in East,Central,and West China,and the entire country respectively,with average non-technical efficiency,low pure technical efficiency (PTE),and high scale efficiency found.Productivity increased by 8.12％,0.25％,12.11％,and 11.58％ in China and its three regions during 2012-2015,and such increase in productivity resulted from progressive technological changes by 16.42％,6.32％,21.08％,and 21.42％,respectively.The TE and PTE of the county hospitals significantly differed among the three regions of China.East and West China showed significantly higher TE and PTE than Central China.More than 60％ of county public hospitals in China and its three areas operated at decreasing ret scales.There was a considerable space for TE improvement in county hospitals in China and its three regions.During 2012-2015,the hospitals experienced progressive productivity;however,the PTE changed adversely.Moreover,Central China continuously achieved a significantly lower efficiency score than East and Westem China.Decision makers and administrators in China should identify the causes of the observed inefficiencies and take appropriate measures to increase the efficiency of county public hospitals in the three areas of China,especially in Central China.