Department of Food & Nutrition, Sungshin Women's University, Seoul, Korea.
1Graduate School of Cultural Industry, Sungshin Women's University, Seoul, Korea.
Copyright © 2012 The Korean Society of Community Nutrition
Food items, reference amount and frequency of folate FFQ1) used in this study
1) FFQ: Food Frequency Questionnaire
2) Subjects chose one among these 9 frequencies at each food item, respectively
Comparison of daily nutrient intake between FFQ1 and FFQ21)
1) FFQ1: first Food Frequency Questionnaire
FFQ2: second Food Frequency Questionnaire
2) NS (Not Significant), *: p < 0.05
3) Mean ± SD
Correlation coefficients between nutrients estimated by FFQ1 and FFQ21)
1) FFQ1: first Food Frequency Questionnaire
FFQ2: second Food Frequency Questionnaire
*: p < 0.05, **: p < 0.01, ***: P < 0.001
Quartile distribution of subjects by cross-classification of FFQ1 and FFQ2 according to folate intake
FFQ1: first Food Frequency Questionnaire
FFQ2: second Food Frequency Questionnaire
Percent of subjects classified into the same and upto adjacent quartiles of folate intake
1) FFQ1: first Food Frequency Questionnaire
2) FFQ2: second Food Frequency Questionnaire
Comparison of daily nutrient intake between FFQ11) and 24-h recall methods
1) FFQ1: first Food Frequency Questionnaire
2) Mean ± SD
3) NS: Not Significant, ***: P < 0.001
Correlation coefficients between nutrients estimated by FFQ11) and 24-h recall methods
1) FFQ1: first Food Frequency Questionnaire
*: p < 0.05, **: p < 0.01, ***: P < 0.001
Quartile distribution of subjects by cross-classification of FFQ11) and 24h-recall methods according to folate intake
1) FFQ1: first Food Frequency Questionnaire
Percent of subjects classified into the lowest/highest and upto adjacent quartiles of folate intake
Distribution of subjects by cross-classification of FFQ1 and 24h-recall methods according to folate intake converted to NAR
1) N (%)
NAR: Nutrient Adequacy Ratio
1) FFQ: Food Frequency Questionnaire 2) Subjects chose one among these 9 frequencies at each food item, respectively
1) FFQ1: first Food Frequency Questionnaire FFQ2: second Food Frequency Questionnaire 2) NS (Not Significant), *: p < 0.05 3) Mean ± SD
1) FFQ1: first Food Frequency Questionnaire FFQ2: second Food Frequency Questionnaire *: p < 0.05, **: p < 0.01, ***: P < 0.001
FFQ1: first Food Frequency Questionnaire FFQ2: second Food Frequency Questionnaire
1) FFQ1: first Food Frequency Questionnaire 2) FFQ2: second Food Frequency Questionnaire
1) FFQ1: first Food Frequency Questionnaire 2) Mean ± SD 3) NS: Not Significant, ***: P < 0.001
1) FFQ1: first Food Frequency Questionnaire *: p < 0.05, **: p < 0.01, ***: P < 0.001
1) FFQ1: first Food Frequency Questionnaire
1) N (%) NAR: Nutrient Adequacy Ratio