Comparative studies on the change of food consumption structure and behavior in a rural town during the lat thirty years.

在过去的30年里，对爱美县池崎镇居民进行了3次营养调查，分析了食物消费结构的变化及其与几种疾病的关系。结果如下：(1)对37个食物类别的数据进行了主因素分析，提取了三个因素：第一个因素是辅食摄入量，第二个因素是面包作为主食之一的习惯，第三个因素是辅食摄入量。(2)第一次调查到最后一次，第一和第三因素的得分都有所上升。但第二个因素的得分没有变化，可以说大米作为主食的作用仍然很重要。(3)食物摄入量与健康的关系分析表明，贫血不仅与营养失衡有关，还与日常生活活动过度有关，高血压与年龄和肥胖有关。值得注意的是，超重男性在第一个因素中得分较高。

Nutrition surveys were performed for the inhabitants in Ikazaki-town, Ehime Prefecture, three times during the last thirty years and the changing pattern of food consumption structure and its relation to several disorders were analyzed.Results were as follows:(1) Multivariate analysis, using Principal Factor Method, was made on the data obtained on 37 food groups, and consequently three factors were extracted.The first factor was the amount of subsidiary food intake, the second was the habit of taking bread as one of the staple foods, the third was the quality of subsidiary food intake.(2) Both scores of first and third factors have increased for first survey to the last, and this indicates that the amount of subsidiary food intake and meat/soybean-product has increased during the last thirty years.The score of the second factor, however, has not changed and it can be mentioned that the role of rice as staple food is still important.(3) The analysis of relationship between food intake and health showed that anemia is caused not only by unbalance of nutrition but also by excess activity of daily living and that high blood pressure is associated with aging and obesity.Moreover, it is noticeable that overweight males have higher score of the first factor.