大和高原三村の食生活構造の特性と健診情報との関連性に関する研究

Abstract

To clarify the characteristics of eating habits among the residents of Yamato-Kogen district, we conducted a principal component analysis of food frequency questionnaire (consisting of 14 items) obtained from the people participating in communitybased mass examinations. The examinations were performed is the district under stuby between July and September, 1992. Their data were compared with data for the control group ; the families of students studying the science of nutrition in college at Nara city. Eigen values, contribution ratios and loading factors were calculated from correlation matrix among 14 items. As the first principal component, the items of Q10 (food cooked with oil), Q7 (boiled fish pastes), Q5 (fishes), Q3 (eggs), Q13 (tsukudani), Q11 (misosoup) were extracted, and as the second one those of Q1 (cooked paddy rice), Q13, Q6 (salted, semidried, split fishes) and Q12 (tsukemono) were extracted. The first principal component was considered to represent a shift from conventional foods in the countryside, and the second one conventional village-type foods. Principal shores of the first to the third principal components were yielded individually using loading factors for each subgroup classified by gender and village. Distribution patterns of two of those components indicated that differences in eating were found not only between men and women but also within the village under study. The distribution pattern found also clearly identifies the persons whose eating habits deviated nutritionally. For the same subjects a multiple regression analysis was done on all kinds of laboratory data and 14 items of food frequency questionnaire. The results revealed the existence of association between eating habits and laboratory data.