As pointed out by H. Toyokawa in 1975, there are internal relationships in the food con sumption pattern among Japanese, which is determined by food habit, preference, and other food-related factors. Despite the fact that their food consumption has been markedly changed since 1975, however, there have been few reports which focused on the change of food con sumption pattern because of the lack of methodologies. We proposed a new method of analyzing the food consumption data which were collected in two or more surveys on the same persons. This method enables to grasp movements of each variable (representing a food group) in factor space, by analyzing multi-year's data in a single procedure. From the analysis of 159 females' food consumption data surveyed in 1979 and 1989, paying attention to the changes in the relationships among the food groups, the following results were obtained; 1. The factors obtained were alike to those which were previously defined as the character istics of Japanese food consumption pattern. 2. The main food groups, which determined, respectively, the first and second factors, decreased absolute values of their factor loading, demonstrating that they lost their typical positions with changes in the relationship among food groups . 3. There was no consistent relationship between the change in intake of each food group and the change in the factor loading, implying that the change in intake could not be explained by only the change of food consumption pattern . 4. It was suggested that this analytical method was useful for examination of the change of food consumption pattern, using the data which were collected in two or more surveys on the same individuals.
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