大和高原三村の食生活構造と健診情報との相関性の検討

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 community-based mass examinations. The examinations were performed in the district under study between July and September in 1991. Eigen values, contribution rations 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), Q4 (meats), Q11 (miso soup) were extracted, and as the second one those of Q1 (cooked paddy rice), Q13 (tsukudani) in Q6 (salted, semidried, split fishes) and Q12 (tsukemono) were extracted. The first principal component was considered to represent a shift from conventinal foods in the countryside, and the second one conventional village-type foods. Principal scores of the 1st to the 3rd principal components were yielded indivisually using loading factors for each subgroup classified by sex and village. Distribution patterns of two of these components indicated that the differences were found in eating habits not only between men and women but also among the villages under study. The distribution patterns could also clearly identify 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 associations between eating habits and laboratory data.