Table 6 Reproducibility of food frequency questionnaire for energy and nutrient intakes

Energy

(kcal)

2503

(2065, 3416)

2536

(2051, 3098)

0.597 (0.313–0.783)

–

0.619 (0.373–0.784)

Protein

(g)

91.7

(66.8, 116.0)

95.1

(71.2, 111.9)

0.663 (0.403–0.824)

0.644 (0.376–0.812)

0.623 (0.379–0.787)

Fat

(g)

73.6

(58.4, 94.0)

69.5

(50.8, 86.8)

0.689 (0.440–0.840)

0.631 (0.358–0.804)

0.606 (0.354–0.775)

Carbohydrate

(g)

402.2

(311.5, 512.5)

362.5

(291.4, 439.9)

0.582 (0.293–0.773)

0.563 (0.269–0.761)

0.588 (0.330–0.764)

Calcium

(mg)

588

(422, 811)

488

(412, 783)

0.604 (0.322–0.788)

0.421 (0.098–0.664)

0.634 (0.406–0.799)

Iron (Fe)

(mg)

7.9

(5.9, 10.6)

8.4

(6.1, 9.8)

0.721 (0.487–0.858)

0.654 (0.390–0.819)

0.735 (0.542–0.854)

Retinol^a

(ηgRAE)

540

(362, 960)

581

(422, 990)

0.633 (0.361–0.806)

0.597 (0.390–0.819)

0.689 (0.474–0.827)

Vitamin B₁

(mg)

1.30

(0.89, 1.79)

1.17

(1.01, 1.67)

0.654 (0.390–0.819)

0.577 (0.287–0.770)

0.634 (0.394–0.793)

Vitamin B₂

(mg)

1.48

(1.02, 1.85)

1.35

(1.03, 1.92)

0.743 (0.521–0.871)

0.562 (0.267–0.761)

0.721 (0.521–0.846)

Vitamin C

(mg)

103

(59, 174)

122

(68, 159)

0.737 (0.521–0.868)

0.745 (0.524–0.872)

0.752 (0.569–0.864)

Dietary fiber

(g)

12.3

(10.0, 16.4)

11.5

(9.1, 16.0)

0.654 (0.390–0.819)

0.679 (0.425–0.834)

0.755 (0.574–0.866)