Figure 1.
Study design used to test the reliability and relative validity of the food frequency questionnaire.
Table 1.
Food grouping used in the study.
Table 2.
Daily mean intakes of energy, 13 nutrients, and 8 food groups, estimated by two FFQs and the average of 24-HRs.
Table 3.
Crude and energy-adjusted ICCs for nutrient and food group intakes in FFQ1 and FFQ2.
Table 4.
Comparison and weighted κ of adjusted daily mean intakes of food groups and nutrients based on FFQs.
Table 5.
Spearman's correlation coefficient of daily mean nutrient and food group intakes obtained from FFQs and the average of 24-HRs.
Table 6.
Comparison and weighted κ of adjusted daily mean intakes of food groups and nutrients based on the average of 24-HRs.