Our study, which is different from previous studies in terms of the estimation approach, applies the stochastic frontier model and the quantile regression method to KReIS(Korean Retirement and Income Study), estimates factors to determine medical expe...
Our study, which is different from previous studies in terms of the estimation approach, applies the stochastic frontier model and the quantile regression method to KReIS(Korean Retirement and Income Study), estimates factors to determine medical expenses of the old-aged families and analyze them Empirical results are as follows first, an income coefficient of the old-aged families on medical expenses in two models are less than that in the linear regression estimation of previous studies, implying that old-aged people cannot help expending the medical expenses regardless of their income level. It suggests a policy implication, as it were, the government needs to introduce a plan for giving the old more benefits in the present medical system. Second, we found that variables of individual characteristics has not a statistically significant impact on the medical expenses from the stochastic frontier model with the half-normal distribution. It conforms to assertions of previous theories, which claimed that a doctor, a supplier of the medical service, is rather likely to decide medical expenses of the consumers from the information asymmetry in the medical service. Our empirical conclusions, different from previous studies' findings, give us stronger grounds for the government to intervene in the medical servive market for the old-aged families.