Development, validity and reproducibility of a whole grain food frequency questionnaire in Malaysian children

Nutrition Journal

Table 2 Comparison of medians and correlations for whole grain daily intake in the first administration of the food frequency questionnaire (FFQ1) and three-day dietary record (3DR) (n = 112)

	FFQ1	3DR	MD^a	% MD^b	Spearman’s correlation
	Median ± IqR	Median ± IqR	MD^a	% MD^b	Spearman’s correlation
Whole grain daily intake (g)	15.0 ± 14.5	6.5 ± 14.0	8.5	56.7	0.732^**

^aMedian difference = median food frequency questionnaire – median food record
^bPercentage of median difference was computed using the formula: (median FFQ1 - median 3DR) / median FFQ × 100
^**p < 0.01
MD median difference, IqR interquartile range

ISSN: 1475-2891