Table 7 Nutrient intake reproducibility between FFQ.1 and FFQ.2

Energy (Kcal)

0.877**

0.877 (0.825–0.915)

0.876 (0.824–0.914)

Proteins (g)

0.609**

0.608 (0.473–0.715)

0.906 (0.858–0.937)

0.905 (0.864–0.934)

Fats (g)

0.751**

0.751 (0.655–0.824)

0.850 (0.787–0.895)

0.849 (0.787–0.894)

Carbohydrates (g)

0.843**

0.838 (0.771–0.887)

0.799 (0.718–0.859)

0797 (0.716–0.857)

Ca (mg)

0.224*

0.128(− 0.001–0.382)

0.120(− 0.043–0.285)

0.119(− 0.016–0.250)

P (mg)

0.950**

0.767 (0.675–0.836)

0.238 (0.036–0.419)

0.236 (0.106–0.359)

Na (mg)

0.947**

0.926 (0.894–0.949)

0.915 (0.877–0.941)

0.914 (0.877–0.940)

K (mg)

0.753**

0.787 (0.703–0.850)

0.710 (0.601–0.793)

0.708 (0.599–0.791)

Fe (mg)

0.717**

0.717(0.610–0.798)

0.691(0.577–0.779)

0.689(0.575–0.776)

Tiamin (mg)

0.760**

0.759(0.665–0.829)

0.667(0.547–0.761)

0.665 (0.545–0.758)

Riboflavin (mg)

0.683**

0.672(− 0.060–0.883)

0.230(− 0.085–0.500)

0.228 (0.133–0.319)

Vitamin B6 (mg)

0.778**

0.791 (0.707–0.853)

0.718 (0.605–0.801)

0.716 (0.612–0.794)

Folic Acid (μg)

0.783**

0.756 (0.661–0.827)

0.711 (0.603–0.794)

0.709 (0.600–0.792)

Vitamin B12 (μg)

0.628**

0.582 (0.401–0.711)

0.747 (0.631–0.828)

0.746 (0.650–0.972)

Vitamin C (μg)

0.742**

0.728 (0.622–0.807)

0.658 (0.532–0.755)

0.656 (0.539–0.784)

Vitamin A (μg)

0.121

0.005(− 0.187–0.196)

0.012(− 0.181–0.203)

0.09(− 0.028–0.045)

Vitamin D (μg)

0.188

0.190(− 0.001–0.368)

0.096(− 0.082–0.273)

0.002(− 0.009–0.013