Behavioral study of visits by aged outpatients to medical facilities in Japan.

In this study we analyzed the changing behavior patterns of aged persons seeking medical care at hospitals and clinics over a recent ten-year period. The results showed a rapid increase in the number of aged outpatients receiving care at hospitals since 1977. In contrast, the number of aged outpatients receiving care at clinics since 1977 fluctuated with an overall downward trend, indicating outpatients' preference to seek treatments in hospital as opposed to clinics. The following are expected to affect future outpatient care rate differences between clinics and hospitals: differences in care rates for new outpatients, and differences between the sexes and among the types of illnesses treated. Having an especially large effect are: hypertension and heart diseases, diseases of the circulatory system also known as "adult diseases"; diseases of the digestive system, and diseases of the respiratory system.