Table 3 Reliability of food groups and nutrients intakes between FFQ1 and FFQ2

 Tuber crops

0.65(0.54,0.74)^a

0.66(0.55,0.74)^a

43.9

42.0

12.2

1.9

0.52

 Meats

0.58(0.45,0.68)^a

0.53(0.38,0.64)^a

36.6

41.5

17.6

4.3

0.39

 Eggs

0.55(0.40,0.66)^a

0.61(0.49,0.71)^a

42.4

37.1

15.1

5.4

0.47

 Grains

0.66(0.55,0.74)^a

0.59(0.46,0.69)^a

38.5

39.5

19.5

2.5

0.44

 Oil

0.73(0.65,0.80)^a

0.73(0.64,0.79)^a

39.5

32.7

22.0

5.8

0.38

 Vegetables

0.34(0.13,0.50)^b

0.26(0.03,0.44)^b

30.2

42.0

18.5

9.3

0.19

 Fruits

0.39(0.19,0.53)^a

0.47(0.30,0.59)^a

44.9

35.6

15.6

3.9

0.46

 Aquatic products

0.59(0.47,0.69)^a

0.54(0.40,0.65)^a

46.8

36.1

13.2

3.9

0.50

 Legumes and products

0.68(0.58,0.76)^a

0.59(0.46,0.69)^a

45.9

38.0

13.7

2.4

0.54

 Salty agent

0.57(0.43,0.67)^a

0.49(0.33,0.61)^a

34.2

39.5

21.0

5.3

0.32

 Spicy agent

0.58(0.45,0.68)^a

0.60(0.47,0.70)^a

36.6

39.5

21.5

2.4

0.38

 Sour agent

0.64(0.53,0.73)^a

0.59(0.46,0.69)^a

44.4

34.6

19.0

2.0

0.36

 Energy(kcal/d)

0.68(0.57,0.75)^a

0.68(0.57,0.75)^a

38.1

45.4

13.7

2.8

0.49

 Carbohydrate(g/d)

0.65(0.53,0.73)^a

0.56(0.42,0.66)^a

38.1

44.9

13.7

3.3

0.48

 Protein(g/d)

0.68(0.57,0.75)^a

0.66(0.56,0.74)^a

46.3

34.6

15.1

4.0

0.48

 Dietary fiber(g/d)

0.58(0.45,0.68)^a

0.60(0.47,0.69)^a

35.6

43.9

15.6

4.9

0.4

 Cholesterol(mg/d)

0.62(0.50,0.71)^a

0.67(0.57,0.75)^a

42.0

40.0

15.6

2.4

0.5

 Fat(g/d)

0.65(0.54,0.73)^a

0.62(0.50,0.71)^a

36.1

41.0

18.1

4.8

0.37

 SFA(g/d)

0.60(0.48,0.70)^a

0.62(0.50,0.71)^a

37.6

43.4

15.1

3.9

0.44

 MUFA(g/d)

0.62(0.50,0.71)^a

0.64(0.53,0.73)^a

40.0

37.6

18.5

3.9

0.41

 PUFA(g/d)

0.67(0.57,0.75)^a

0.61(0.48,0.70)^a

32.7

43.9

18.5

4.9

0.35

 Vitamin A(μgRE/d)

0.27(0.04,0.44)^b

0.26(0.02,0.44)^b

37.6

35.1

16.6

10.7

0.33

 Vitamin D(μg/d)

0.65(0.54,0.73)^a

0.62(0.50,0.71)^a

43.4

39.5

12.7

4.4

0.48

 Vitamin E(mg/d)

0.72(0.63,0.79)^a

0.69(0.60,0.77)^a

46.3

37.1

13.7

2.9

0.53

 Thiamin(mg/d)

0.63(0.51,0.72)^a

0.61(0.48,0.70)^a

41.5

38.1

15.6

4.8

0.42

 Riboflavin(mg/d)

0.65(0.53,0.73)^a

0.70(0.60,0.77)^a

39.0

43.9

12.7

4.4

0.43

 Pyridoxine(mg/d)

0.54(0.39,0.65)^a

0.54(0.40,0.65)^a

41.5

37.6

16.1

4.8

0.41

 Vitamin C(mg/d)

0.25(0.02,0.43)^b

0.28(0.05,0.45)^b

36.1

36.1

22.0

5.8

0.29

 Folate(μg/d)

0.53(0.38,0.64)^a

0.50(0.35,0.62)^a

35.1

42.9

16.1

5.9

0.36

 Niacin(mg/d)

0.66(0.55,0.74)^a

0.56(0.41,0.66)^a

40.5

42.4

13.2

3.9

0.48

 Calcium(mg/d)

0.62(0.50,0.71)^a

0.64(0.52,0.72)^a

40.5

37.6

15.6

6.3

0.37

 Phosphorus(mg/d)

0.65(0.54,0.74)^a

0.65(0.54,0.73)^a

45.4

36.1

14.6

3.9

0.48

 Potassium(mg/d)

0.65(0.54,0.73)^a

0.58(0.44,0.68)^a

45.4

36.1

13.2

5.3

0.45

 Sodium(mg/d)

0.58(0.45,0.68)^a

0.49(0.32,0.61)^a

37.1

38.1

18.5

6.3

0.32

 Magnesium(mg/d)

0.61(0.49,0.70)^a

0.56(0.42,0.66)^a

42.9

37.1

15.6

4.4

0.44

 Iron(mg/d)

0.68(0.58,0.76)^a

0.71(0.61,0.78)^a

42.9

38.1

15.6

3.4

0.47

 Zinc(mg/d)

0.65(0.53,0.73)^a

0.62(0.50,0.71)^a

41.0

42.4

11.2

5.4

0.46

 Selenium(μg/d)

0.63(0.51,0.72)^a

0.57(0.44,0.67)^a

43.4

34.6

17.1

4.9

0.41

 Copper(mg/d)

0.58(0.45,0.68)^a

0.54(0.40,0.65)^a

44.4

35.6

15.6

4.4

0.45

 Iodine(μg/d)

0.65(0.53,0.73)^a

0.68(0.58,0.76)^a

42.0

42.9

9.8

5.3

0.48