Table 3

Mean nutrient intake and comparison of the results obtained with the methods: FP 24-hR and WFR
NUTRIENT FP 24-hR WFR Pearsonr Mean difference FP24hR – WFRa 95% Limits of agreementb
Mean SEM Mean SEM
Energy [kJ] 5854 262 6092 261 0.99 -238 (-3.99) -683 (-11.5) 206 (3.5)
Protein [g] 46.70 2.23 48.95 2.33 0.99 -2.25 (-4.66) -6.93 (-14.5) 2.43 (5.1)
Total fat [g] 23.59 1.12 25.09 1.12 0.96 -1.50 (-6.0) -5.34 (-21.9) 2.34 (9.6)
Carbohydrate [g] 251 14 260 14 0.99 -8.45 (-3.2) -32.66 (-12.8) 15.8 (6.2)
Dietary fiber [g] 15.6 1.0 16.2 1.1 0.99 -0.63 (-3.7) -2.5 (-15.8) 1.6 (7.9)
Calcium [mg] 254 26 260 25 0.99 -6.20 (-2.4) -48.1 (-18.7) 35.7 (13.9)
Iron [mg] 11.22 0.47 11.82 0.44 0.97 -0.60 (-5.1) -1.92 (-16.7) 0.72 (6.3)
Zinc [mg] 6.54 0.30 6.91 0.30 0.98 -0.37 (-5.4) -1.13 (-16.8) 0.38 (5.7)
Selenium [μg] 89.2 6.2 92.8 6.7 0.98 -3.55 (-3.8) -19.2 (-21.1) 12.1 (13.3)
Vitamin C [mg] 65.1 7.1 65.7 7.25 0.99 -0.59 (-0.9) -11.4 (-17.4) 10.2 (15.6)
Thiamin [mg] 0.78 0.05 0.81 0.05 0.98 -0.03 (-4.0) -0.14 (-17.6) 0.08 (10.1)
Niacin [μg] 11.98 0.55 12.58 0.57 0.97 -0.60 (-4.7) -2.15 (-17.5) 0.96 (7.8)
Folate total [μg] 177 13 185 13 0.98 -8.44 (-4.6) -37.5 (-20.7) 20.6(11.4)
β-Carotenoids [μg] 3087 428 3126 462 0.99 -39.6 (-1.3) -804 (-25.9) 787 (25.4)
Vitamin A [μg RE] 378 43 387 39 0.99 -8.31 (-2.1) -85.4 (-22.3) 68.8 (18.0)
Vitamin E [mg] 2.44 0.15 2.50 0.14 0.97 -0.13 (-5.4) -0.56 (-22.9) 0.29 (11.8)

a Mean difference between FP 24-hR and WFR, expressed in the corresponding units for each nutrient and percentage in parenthesis. The percentage was calculated as: % of the mean difference = ((mean nutrient from FP 24hR- mean nutrient from WFR) / mean nutrient from FWR)*100.

b 95% limits of agreement for the difference between the FP 24-hR and WFR, in the corresponding units for each nutrient and percentage in parenthesis, show the range of under and over-estimation for the agreement between both methods.

Lazarte et al.

Lazarte et al. Nutrition Journal 2012 11:61   doi:10.1186/1475-2891-11-61

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