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Table 4 Dietary Nutrient Density

From: The quality of girls' diets declines and tracks across middle childhood

  Nutrient Density a,b
  Age 5 Age 7 Age 9
Vitamin A (μg RAE) 417.9 ± 228.6 389.3 ± 156.5 385.6 ± 150.8
Vitamin C (mg) 50.0 ± 29.2 43.5 ± 21.8 δ 40.5 ± 21.4 δ
Vitamin E (mg) 3.5 ± 1.2 3.0 ± 1.0 δ 3.3 ± 1.0
Folate (μg) 122.9 ± 38.4 121.3 ± 39.0 175.9 ± 43.0 δ
Vitamin D (μg) 3.5 ± 1.5 3.2 ± 1.3 δ 2.9 ± 1.5 ψ
Vitamin B6 (mg) 0.8 ± 0.2 0.8 ± 0.2 0.8 ± 0.3
Vitamin B12 (μg) 2.0 ± 1.4 1.9 ± 0.9 2.2 ± 2.5
Calcium (mg) 544.7 ± 179.5 513.1 ± 162.2 δ 503.3 ± 156.1 δ
Phosphorus (mg) 651.2 ± 140.2 624.5 ± 134.8 δ 610.3 ± 127.6 δ
Magnesium (mg) 126.2 ± 24.3 120.5 ± 24.2 δ 119.1 ± 23.2 δ
Iron (mg) 7.1 ± 2.2 6.9 ± 1.9 6.9 ± 1.8
Zinc (mg) 5.2 ± 1.4 5.1 ± 1.3 ‡δ 4.9 ± 1.2 δ
  1. a Dietary densities are expressed as units per 1000 kcal. b Mean ± SD; values with different symbols are significantly different at p < 0.0001, except for phosphorus and magnesium at p < 0.001, calcium at p < 0.01, and zinc at p < 0.05