The sampled households in each province were classified respectively into quintiles from the poorest to the richest (Q1 to Q5) on the basis of the annual household income level. The differences in the household socioeconomic characteristics of each province were described among quintiles in each province.
Health care needs and utilization, medical expenditures and NCMS reimbursement for health services were compared among each income quintile to show the protection differences in NCMS. We calculated the CHE prevalence of each income quintiles pre- and post-reimbursement, and then compared their changes of each quintile. And the CIs of the CHE prevalence, pre- and post-reimbursement, were calculated to show equity change.
Continuous variables were analyzed by one-way ANOVA to compare the differences in means, and categorical variables were analyzed by Chi-square test to compare the differences in proportion. Data were coded and computerized using EpiData 3.0 and analyzed with SPSS 12.0 and STATA 13.0.
The Ethics Committee of Tongji Medical College, Huazhong University of Science and Technology approved the research proposal. All of the respondents agreed an informed consent before they were interviewed.
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