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This study compared and analyzed the effect of income-redistribution, calculating the occupied rate of insurance contribution, the occupied rate of insurance benefits, the rate of insurance benefits, decile distribution ratio by classes of insurance contribution, collecting data on the basis of the estimated details of insurance contribution and individual money wage lists for one-year after the combination of medical insurance program for industrial workers, by systematic sampling, extracting 4,160 families(14,764 people) among people applied to medical insurance program for self employees in Taegu Metropolitan City on the basis of Oct. 1st in 1998, comparing the effect of income redistribution according to family numbers for self employees. Decile distribution ratio on the basis of insurance benefits by family numbers was 5.60 in the less than 2 families, 1.43 in the 3 - 4 families, 0.30 in the over 5 families. So the effect of income-redistribution was improved in the phase of insurance benefits. The study of the effect of income-redistribution should continuously be accomplished that can grasp the equality about the imposing system of insurance contribution, under the system of combined medical insurance towards enforcement of the law of national health insurance, because the purpose is the building up the system of single insurance contribution on the basis of whole nation income.
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