Table 3.

Correlation coefficients of SQFFQ in reliability study (SQFFQ1 vs SQFFQ2)

Nutrients (N=110)		Pearson's correlation coefficient		ICC
		After logarithmic transformation	After adjusting for energy intake
Total energy	Energy*	0.69	-	0.68
Three major nutrients	Protein*	0.65	0.58	0.64
	Fat*	0.63	0.53	0.61
	Carbohydrate*	0.70	0.56	0.70
Dietary fibre	Dietary fibre*	0.75	0.72	0.86
Cholesterol	Cholesterol*	0.60	0.57	0.56
Vitamins	Vitamin A*	0.61	0.55	0.58
	Thiamine*	0.59	0.42	0.52
	Riboflavin*	0.66	0.65	0.63
	Niacin*	0.63	0.51	0.60
	Vitamin C*	0.73	0.72	0.72
	Vitamin E*	0.75	0.75	0.73
Elementary elements	Calcium*	0.71	0.67	0.71
	Phosphorus*	0.68	0.63	0.67
	Potassium*	0.68	0.62	0.66
	Sodium*	0.69	0.65	0.67
	Magnesium*	0.62	0.52	0.60
Trace elements	Iron*	0.68	0.70	0.65
	Zinc*	0.62	0.45	0.61
	Selenium*	0.50	0.43	0.45
	Copper*	0.72	0.67	0.70
	Manganese*	0.62	0.64	0.62

*p<0.05

ICC=Intra-class correlation coefficient