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Table 3 Percentage of energy and 40 nutrients† involved in food intake in the developed FFQ

From: Development of a food frequency questionnaire to estimate habitual dietary intake in Japanese children

Nutrient

Contribution*(%)

Energy (kcal)

95.5

Protein (g)

95.5

Fat (g)

95.7

Carbohydrates (g)

95.1

Sodium (mg)

95.9

Potassium (mg)

93.3

Calcium (mg)

94.7

Magnesium (mg)

94.5

Phosphorous (mg)

95.5

Iron (mg)

94.9

Zinc (mg)

94.4

Copper (mg)

94.9

Manganese (mg)

91.2

Retinol (μg)

97.4

Alpha-carotene (μg)

97.8

Beta-carotene (μg)

95.7

Cryptoxanthin (μg)

93.4

Beta-carotene equivalent (μg)

95.7

Retinol activity equivalent (μg RAE)

96.5

Vitamin D (μg)

92.5

Alpha-tocopherol (mg)

95.0

Beta-tocopherol (mg)

95.7

Gamma-tocopherol (mg)

95.2

Delta-tocopherol (mg)

94.4

Vitamin K (mg)

97.2

Vitamins B1 (mg)

95.1

Vitamins B2 (mg)

95.6

Niacin (mg)

94.5

Vitamin B6 (mg)

94.5

Vitamin B12 (μg)

95.8

Folic acid (μg)

92.2

Pantothenic acid (mg)

95.8

Vitamin C (mg)

88.6

Saturated fatty acid (g)

95.6

Monounsaturated fatty acid (g)

96.1

Polyunsaturated fatty acid (g)

95.5

Cholesterol (mg)

96.7

Soluble dietary fiber (g)

93.5

Insoluble dietary fiber (g)

93.7

Total dietary fiber (g)

93.5

Sodium chloride equivalent (mg)

96.0

  1. † The standard tables of food composition in Japan include energy and 40 nutrients.
  2. * The proportion that the 75 food items occupy in the total intake of energy and 40 nutrients of the 586 subjects.