PONE-D-25-39166：The impact of China’s employee basic medical insurance outpatient pooling scheme on outpatient healthcare utilization among middle-aged adults

Dataset: “PONE-D-25-39166 Impact of China's Employee Basic Medical Insurance Outpatient Co-payment Policy on Outpatient Utilization Among Middle-Aged Individuals” (Submitted to PLOS ONE)This dataset contains the minimal data required for our key findings in the empirical analysis of China's Urban Employee Basic Medical Insurance (UEBMI) outpatient bundling policy. The data supports the main results regarding the policy's impact on middle-aged insured individuals (aged 45-60) in terms of out-of-pocket costs, regional heterogeneity, and multi-morbidity subgroups.Included files:1. charls 2018.dta - Anonymized analysis dataset (N=1099 observations) containing all variables used in regression and descriptive statistics2. data dictionary.xlsx - Comprehensive variable descriptions, coding schemes, and statistical summaries3. 2018 d0file.do - Complete replication code for reproducing all key tables and figures