AN ECOLOGICAL COMPARATIVE STUDY OF NATIONAL HEALTH IN JAPAN AND THE UNITED STATES

In this study, an attempt was made to delineate the structure of environmental factors thatinfluence national health and ascertain the difference of these influences, from the view point of a quantative approach, between two countries that have different cultures and ethnic compositions. As a consequence of past studies, i. e., those reporting how environmental factores influenced national health in Japan. Using the same paradigm, U. S. data was analyzed, i. e., the structure of environmental factors and how they influenced national health. The distribution of the data provided some reasons for the differences between Japan and the U. S..