Table 2

Pearson correlations between Food Frequency Questionnaire (FFQ) estimates and weighted 24-Hour Recall (24-HDR) estimates
Nutrienta Women Men
Unadjusted Adjustedb De-attenuated Unadjusted Adjustedb De-attenuated
Energy (kcal) 0.23 0.26* 0.39 0.44*
Protein (g) 0.25 0.30 0.36* 0.07 0.11 0.13
Carbohydrate (g) 0.17 0.34 0.38* 0.56 0.54 0.61*
Dietary Fibre (g) 0.32 0.47 0.52* 0.55 0.54 0.61*
Total Fat (g) 0.33 0.32 0.37* 0.24 0.32 0.38*
Saturated Fat (g) 0.27 0.28 0.33* 0.28 0.26 0.31*
Monounsaturated Fat (g) 0.36 0.29 0.34* 0.23 0.41 0.51*
Polyunsaturated Fat (g) 0.29 0.17 0.20* 0.23 0.20 0.26*
Cholesterol (mg) 0.25 0.34 0.44* 0.10 0.33 0.42*
Vitamin A(RAE) 0.26 0.32 0.38* 0.23 0.35 0.42*
Carotene (RE) 0.40 0.38 0.50* 0.13 0.19 0.28*
Vitamin D (IU) 0.32 0.37 0.45* 0.41 0.45 0.55*
Calcium (mg) 0.32 0.43 0.50* 0.50 0.45 0.51*

a All nutrients were log-transformed to improve normality.

b Nutrient intakes were adjusted for total energy intake by residual method.

*Correlations of 0.16 and higher have a p-value less than 0.05.

Liu et al.

Liu et al. Nutrition Journal 2013 12:49   doi:10.1186/1475-2891-12-49

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