TABLE B-2 Illustrative Calculations of Population-Weighted Estimated Average Requirements (EARs) for Persons 4 Years of Age and Older Using 2006 Canadian Population Figures and of the Highest EAR for Each Nutrient (Nonweighted)

Nutrienta

Median Weighted EAR

Percent Within 20%b

Percent Within 30%c

Highest EARd

Percent Within 20%e

Percent Within 30%f

Vitamin A (μg RAE)

533

55

73

630

52

72

Vitamin C (mg)

64

67

82

75

61

82

Vitamin E (mg α-tocopherol)

12

85

92

12

85

92

Thiamin (mg)

0.9

81

92

1.0

80

90

Riboflavin (mg)

1.0

75

90

1.1

68

88

Niacin (mg)

11

72

87

12

72

87

Vitamin B6 (mg)

1.1

70

85

1.4

53

79

Folate (μg DFE)

315

86

93

330

85

92

Vitamin B12 (μg)

2.0

85

92

2.0

85

92

Copper (μg)

686

86

93

700

86

93

Iodine (μg)

93

86

96

95

86

95

Iron (mg)

6.1

61

78

8.1

38

63

Magnesium (mg)

288

62

81

350

54

77

Molybdenum (μg)

33

85

93

34

86

93

Phosphorus (mg)

587

77

83

1,055

13

14

Selenium (μg)

44

86

93

45

86

93

Zinc (mg)

7.5

62

80

9.4

49

76

NOTE: Population subgroup proportions for this table were computed using the Statistics Canada national population projections (Statistics Canada, 2003). The source data are aggregated; group definitions differ slightly from the EAR guidelines.

aRAE = retinol activity equivalents, DFE = dietary folate equivalents.

bEstimated proportion of the population with a requirement within 20% of the population-weighted EAR.

cEstimated proportion of the population with a requirement within 30% of the population-weighted EAR.

dExcludes EARs for pregnant and lactating women.

eEstimated proportion of the population with a requirement within 20% of the highest EAR.

fEstimated proportion of the population with a requirement within 30% of the highest EAR.



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