食物調査における調査期間の検討
1969 年 27 巻 6 号 p. 291-295
詳細
1969 年 27 巻 6 号 p. 291-295
The appropriate period of the dietary survey is one of the most important factor to carry out the survey.
This paper is to report about our study concerning the duration of the survey period. The data of the National Nutrition Survey and other were used to examine, and each average nutrition intake from 1 day to 7 days was compared and examined statistically, and no significant difference was recognized among them.
The variations of the individual groups or persons in all the nutrient intakes are considerably great. but the rate of convergence of the cumulative days is smaller as the period is longer.
From the above it may be concluded that the longer the period the better is the result.
