英文摘要 |
This study aims to analyze the effect of price changes on the medical care utilization of the elderly aged 65 and above. The 921 Chi-Chi earthquake occurred on September 21, 1999, and caused severe damage to the central part of Taiwan, especially Nantou and Taichung Counties. Immediately following the earthquake, Taiwan’s government provided medical aid to the victims via waiving the NHI copayments of ambulatory care for one year and of inpatient care for two years. We use the 921 earthquake as a natural experiment to investigate how the elderly reacted to the copayment exemption. By using the difference-in-difference in nonlinear regression specification, on one hand, we compare a group of veterans, who were victims and lived in the affected areas, with nonveteran victims, to identify the effect of price subsidization. On the other hand, we compared the victim veterans living in the affected area with the non-victim veterans living in the unaffected area to identify the impact of earthquake damage on the medical care utilization. Our empirical results show that the government copayment exemption policy increased the mean number of outpatient visits per person by 3.24 for all observations and 3.5 for the male sample, and had no effect on inpatient care either in the probability of hospitalization or length of stay after hospitalization. The earthquake resulted in an increase of 4.63 in the mean number of outpatient visits per person for all observations (4.55 for the male sample), and an increase of 10.37% and 2.66% in the likelihood of hospitalization roughly (12.58%and 3.29% for the male sample), respectively, in the first year and second year following the earthquake. The price elasticity of outpatient care for the elderly was about -0.05 for all observations and -0.06 for the male sample. Our empirical results provide some policy implications regarding the control of the growth of medical costs for the elderly. |