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Table 8 Bland Altman plot analysis for testing the reproducibility of the FFQ (n = 52)

From: Development and validation of a quantitative food frequency questionnaire to assess dietary intake among Lebanese adults

 

Mean difference

SD of mean difference

Lower LOA

Upper LOA

Energy Intake

301.37

693.46

−1057.81

1660.54

Protein (%)

−0.34

2.20

−4.65

3.97

Fats (%)

−1.34

4.76

−10.66

7.99

CHO (%)

1.54

5.75

−9.74

12.81

Sugar (%CHO)

−0.40

6.63

−13.40

12.59

SFA (%)

0.17

1.88

−3.52

3.86

MUFA (%)

−0.46

2.75

−5.85

4.92

PUFA (%)

−0.28

1.21

−2.64

2.09

Protein (g)

9.21

37.95

−65.17

83.60

Fat (g)

8.41

34.44

−59.09

75.91

CHO (g)

49.35

93.35

− 133.62

232.32

Sugar (g)

10.70

30.98

−50.03

71.43

SFA (g)

3.19

9.79

−15.99

22.37

MUFA (g)

3.66

15.72

−27.16

34.47

PUFA (g)

1.11

6.53

−11.68

13.90

Fibers (g)

5.31

9.70

−13.71

24.33

Cholesterol (mg)

50.56

342.05

−619.85

720.98

Alcohol (g)

0.65

4.07

−7.34

8.63

Alcohol (%)

0.14

0.89

−1.61

1.89

Vitamin A

43.37

876.97

− 1675.49

1762.22

Vitamin D

0.53

2.52

−4.40

5.46

Vitamin E

2.04

6.93

−11.55

15.63

Vitamin C

24.62

57.87

−88.80

138.05

Thiamin B1

0.31

0.86

−1.37

1.99

Riboflavin B2

1.03

7.62

−13.92

15.97

Niacin

2.33

13.63

−24.38

29.04

B5 (mg)

1.08

4.52

−7.78

9.94

B6 (mg)

0.32

1.03

−1.71

2.35

Folate (ug)

79.00

212.30

− 337.11

495.11

Cobalamin B12 (ug)

0.37

4.65

−8.75

9.48

Magnesium

52.06

118.79

−180.78

284.89

Calcium

82.46

399.77

−701.10

866.02

Phosphorus

151.48

490.28

− 809.46

1112.42

Potassium (mg)

444.38

1023.41

− 1561.50

2450.27

Sodium (mg)

414.65

889.22

−1328.22

2157.53

Iron (mg)

2.88

9.23

−15.20

20.97

Zinc (mg)

1.86

7.52

−12.87

16.60

Copper (mg)

0.27

0.69

−1.09

1.62

Manganese (mg)

0.66

1.22

−1.73

3.05

Selenium (ug)

2.19

57.28

−110.07

114.46

  1. LOA limit of agreement