Table 5
Comparison of nutrient intakes as assessed by the Australian Child and Adolescent Eating
Nutrients ACARFS
Percent classified in the same quartile Percent classified in the same or adjacent quartile Percent grossly misclassified Quartile 4 κ‡ Quartile 3 κ‡ Quartile 2 κ‡ Quartile 1 κ‡ Overall weighted κ Overall strength of agreement§ Spearman’s correlation coefficient
% energy from SFA 28.4 66.2 9.4 0.06 −0.01 −0.01 0.13 0.13∥* Slight −0.15***
Fiber 47.5 87.2 1.2 0.36 0.12 0.16 0.56 0.62∥** Substantial 0.67***
Thiamin 41.4 79.0 4.3 0.24 0.15 0.09 0.39 0.43∥** Moderate 0.47***
Riboflavin 36.9 76.6 5.6 0.14 0.10 0.05 0.35 0.36∥** Fair 0.42***
Niacin 41.3 82.3 3.3 0.27 0.09 0.09 0.41 0.49∥** Moderate 0.56***
Folate 43.1 83.5 3.3 0.28 0.16 0.09 0.44 0.51∥** Moderate 0.56***
Vitamin C 47.0 89.0 0.9 0.39 0.16 0.13 0.50 0.64∥** Substantial 0.70***
Vitamin A 36.3 78.3 3.2 0.15 0.03 0.02 0.40 0.43∥** Moderate 0.49***
Β-Carotene 46.6 87.1 0.6 0.35 0.11 0.13 0.56 0.62∥** Substantial 0.67***
Iron 44.0 82.2 3.2 0.28 0.15 0.10 0.48 0.50∥** Moderate 0.54***
Magnesium 45.7 84.6 2.2 0.33 0.12 0.17 0.49 0.56∥** Moderate 0.62***
Calcium 39.4 78.6 4.9 0.22 0.11 0.08 0.36 0.42∥** Moderate 0.46***
Zinc 40.1 82.1 2.3 0.28 0.02 0.08 0.42 0.50∥** Moderate 0.56***

Survey (ACAES) versus Australian Child and Adolescent Recommended Food Score (ACARFS). ACAES, Australian Child and Adolescent Eating Survey; ACARFS, Australian Child and Adolescent Recommended Food Score; κ, kappa statistic; SFA, saturated fatty acids. ‡Quartile 4 indicates the highest ACARFS (32–58) and nutrient intakes, quartile 3 indicates the second highest ACARFS (26–31) and nutrient intakes, quartile 2 indicates the second lowest ACARFS (19–25) and nutrient intakes, quartile 1 indicates the lowest ACARFS (3–18) and nutrient intakes. § Landis and Koch Classification [42]. ∥Standard Error: 0.04 *P < 0.0005 **P < 0.001 *** Significantly different from 0, P < 0.001.

Marshall et al. Nutrition Journal 2012 11:96   doi:10.1186/1475-2891-11-96

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