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Table 2 Mean ± SD, mean difference, Spearman’s correlation (r), % agreement and 95 % Limits of Agreement (LOA) for selected energy and nutrients intakes as measured by FFQ-1 and mean 24-HRs (n = 111)

From: Validity and reliability of a food frequency questionnaire to estimate dietary intake among Lebanese children

Nutrients

FFQ-1

24-HRs

Mean difference

Spearman’s ra

Percent agreement (same & adjacent quartile)

95 % LOA

Mean ± SD

Mean ± SD

Energy (Kcal)

2560.86 ± 822.32

1760.66 ± 489.26

800.20 ± 689.88

0.54**

81.08

−1015.12

−170.37

Protein (g)

81.71 ± 25.88

60.71 ± 19.23

21.00 ± 26.22

0.33**

78.38

−28.36

9.03

Carbohydrate (g)

351.87 ± 120.07

229.87 ± 63.52

121.99 ± 105.15

0.38**

81.98

−170.79

−52.54

Fat (g)

96.47 ± 35.70

68.42 ± 25.82

28.04 ± 29.15

0.33**

84.68

−13.35

−2.16

Saturated fat (g)

30.17 ± 12.47

21.00 ± 7.49

9.17 ± 11.06

0.39**

81.98

−14.16

7.89

MUFA (g)

34.87 ± 13.31

24.20 ± 10.02

10.67 ± 10.92

0.26**

87.39

−5.58

6.13

PUFA (g)

20.80 ± 10.35

15.89 ± 9.92

4.91 ± 9.99

0.33**

81.08

−0.48

8.25

Trans-fatty Acid (g)

0.16 ± 0.16

0.10 ± 0.10

0.05 ± 0.16

0.34**

76.58

−0.06

0.02

Calcium (mg)

996.76 ± 365.68

628.19 ± 231.70

368.56 ± 364.47

0.44**

79.28

−382.53

44.68

Iron (mg)

19.09 ± 7.15

13.37 ± 4.65

5.72 ± 5.83

0.45**

80.18

−6.00

0.28

Fiber (g)

23.36 ± 9.60

15.00 ± 5.03

8.36 ± 8.77

0.37**

79.28

−12.12

−3.61

Sugar (g)

113.47 ± 47.94

63.28 ± 21.72

50.24 ± 43.25

0.35**

84.68

−55.86

−19.57

  1. **P value < 0.01
  2. aAdjustment for energy was carried using the residual method