C

Dietary Intake Data from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994

TABLE C-1 Dietary Vitamin C Intake (mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994

Sexa and Age

Number of Persons Examined

Selected Percentiles

   

Mean

1st

5th

Both sexes, 0–6 mo

413

93.9

55.0

64.0

Standard error

 

6.5

2.5

4.0

Both sexes, 7–12 mo

579

110.2

56.0

69.0

Standard error

 

4.4

3.3

3.8

Both sexes, 1–3 y

3,623

91.5

50.0

60.0

Standard error

 

1.7

1.3

1.3

Both sexes, 4–8 y

4,663

104.6

57.0

68.0

Standard error

 

2.2

5.7

4.9

M, 9–13 y

1,262

109.9

42.0

56.0

Standard error

 

4.7

2.6

3.0

M, 14–18 y

938

128.0

41.0

57.0

Standard error

 

6.0

2.0

2.6

M, 19–30 y

1,960

122.2

39.0

55.0

Standard error

 

3.9

2.1

2.6

M, 31–50 y

2,611

115.1

37.0

52.0

Standard error

 

3.2

1.5

1.7

M, 51–70 y

2,029

110.6

33.0

47.0

Standard error

 

4.6

1.8

2.3

M, 71+ y

1,321

103.9

36.0

50.0

Standard error

 

3.3

1.3

1.6



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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids C Dietary Intake Data from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994 TABLE C-1 Dietary Vitamin C Intake (mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 413 93.9 55.0 64.0 Standard error   6.5 2.5 4.0 Both sexes, 7–12 mo 579 110.2 56.0 69.0 Standard error   4.4 3.3 3.8 Both sexes, 1–3 y 3,623 91.5 50.0 60.0 Standard error   1.7 1.3 1.3 Both sexes, 4–8 y 4,663 104.6 57.0 68.0 Standard error   2.2 5.7 4.9 M, 9–13 y 1,262 109.9 42.0 56.0 Standard error   4.7 2.6 3.0 M, 14–18 y 938 128.0 41.0 57.0 Standard error   6.0 2.0 2.6 M, 19–30 y 1,960 122.2 39.0 55.0 Standard error   3.9 2.1 2.6 M, 31–50 y 2,611 115.1 37.0 52.0 Standard error   3.2 1.5 1.7 M, 51–70 y 2,029 110.6 33.0 47.0 Standard error   4.6 1.8 2.3 M, 71+ y 1,321 103.9 36.0 50.0 Standard error   3.3 1.3 1.6

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 69.0 78.0 91.0 107.0 124.0 135.0 157.0 4.8 5.5 7.7 10.7 10.8 9.5 7.4 76.0 90.0 108.0 127.0 147.0 160.0 186.0 3.8 3.8 4.3 5.2 6.1 6.9 10.6 65.0 76.0 89.0 105.0 120.0 130.0 151.0 1.4 1.5 1.7 2.0 2.4 2.7 3.5 75.0 87.0 103.0 120.0 137.0 148.0 170.0 4.4 3.3 2.3 2.8 4.8 6.4 10.1 65.0 82.0 105.0 132.0 162.0 181.0 223.0 3.3 3.8 4.6 5.7 7.2 8.4 11.4 68.0 89.0 119.0 157.0 199.0 228.0 293.0 3.1 4.1 5.6 7.7 10.3 12.3 17.2 65.0 85.0 114.0 150.0 190.0 217.0 278.0 2.9 3.4 3.8 4.9 7.1 9.2 14.9 62.0 81.0 108.0 141.0 178.0 203.0 258.0 1.9 2.3 2.9 4.0 5.6 6.8 10.1 57.0 76.0 103.0 137.0 174.0 200.0 256.0 2.5 3.1 4.2 5.8 8.0 9.8 14.2 59.0 76.0 99.0 126.0 155.0 175.0 215.0 1.8 2.2 3.0 4.3 5.9 7.3 10.4

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-1 Continued Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th F, 9–13 y 1,279 103.2 47.0 60.0 Standard error   5.7 2.4 2.9 F, 14–18 y 707 94.4 32.0 44.0 Standard error   6.3 2.8 3.6 F, 19–30 y 1,106 84.1 31.0 42.0 Standard error   4.7 2.8 3.6 F, 31–50 y 2,644 90.0 32.0 43.0 Standard error   2.6 1.9 2.1 F, 51–70 y 2,143 102.4 35.0 49.0 Standard error   3.5 2.1 2.3 F, 71+ y 1,436 102.8 45.0 58.0 Standard error   2.6 1.8 1.9 Pregnant 214 124.0 49.0 65.0 Standard error   11.3 6.4 9.4 Lactating 100 136.8 50.0 65.0 Standard error   21.0 13.8 20.2 All individuals (+P/L) 29,022 105.5 46.0 58.0 Standard error   1.3 3.5 3.2 All individuals 28,714 105.3 45.0 58.0 Standard error   1.2 3.3 3.0 NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of vitamin C, computed using intake from food sources alone. Dietary intake data are from NHANES III, and the distribution was adjusted using C-SIDE and the method presented in Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. Data corresponding to age groups 0–6 months, 7–12 months, and 1–3 years of age were not adjusted because no replicate vitamin C intake data are available for children under 3 years.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 67.0 82.0 100.0 121.0 143.0 158.0 187.0 3.4 4.5 5.9 7.1 8.1 8.8 11.0 52.0 68.0 89.0 115.0 144.0 163.0 205.0 4.0 4.9 6.1 7.5 9.7 11.9 19.4 48.0 61.0 79.0 102.0 126.0 142.0 179.0 4.0 4.4 4.7 5.2 6.3 7.6 11.6 51.0 65.0 85.0 109.0 136.0 154.0 194.0 2.2 2.3 2.6 3.1 4.1 4.9 7.0 57.0 74.0 97.0 125.0 154.0 173.0 215.0 2.4 2.7 3.3 4.6 6.3 8.0 12.7 66.0 81.0 100.0 122.0 144.0 158.0 188.0 2.1 2.2 2.5 3.0 3.7 4.2 5.4 75.0 93.0 119.0 148.0 180.0 202.0 247.0 10.9 12.3 12.3 12.0 13.1 14.3 17.9 75.0 98.0 130.0 169.0 208.0 232.0 274.0 22.6 23.7 22.5 23.7 28.4 30.9 32.6 66.0 82.0 102.0 125.0 150.0 166.0 201.0 2.8 2.1 1.3 2.2 4.4 6.1 10.0 66.0 81.0 101.0 125.0 150.0 167.0 203.0 2.7 2.0 1.2 2.2 4.3 6.0 9.9 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-2 Total (Diet + Supplements) Vitamin C Intake (mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 413 100.3 54.9 65.5 Both sexes, 7–12 mo 579 122.5 62.8 70.9 Both sexes, 1–3 y 3,623 121.1 53.0 62.8 Both sexes, 4–8 y 4,663 136.2 58.7 70.9 M, 9–13 y 1,262 143.2 44.1 59.2 M, 14–18 y 938 156.7 37.3 60.8 M, 19–30 y 1,960 172.9 36.3 59.5 M, 31–50 y 2,611 187.1 36.4 55.8 M, 51–70 y 2,029 199.4 34.0 49.8 M, 71+ y 1,321 176.3 38.2 52.5 F, 9–13 y 1,279 129.8 44.2 63.5 F, 14–18 y 707 145.5 31.1 50.1 F, 19–30 y 1,106 121.9 31.1 44.4 F, 31–50 y 2,644 165.1 31.0 48.1 F, 51–70 y 2,143 202.4 37.7 52.3 F, 71+ y 1,436 192.3 46.8 62.2 Pregnant 214 192.7 68.9 77.7 Lactating 100 195.9 60.5 76.6 All individuals (+P/L) 29,022 167.2 45.5 61.9 All individuals 28,714 186.9 44.6 61.0 NOTE: Estimated mean and selected percentiles of the usual intake distribution of vitamin C, computed using intakes from food and supplement sources. Dietary intake data are from NHANES III. Intakes from food were adjusted using C-SIDE and the method presented by Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. However, intakes from supplements are unadjusted, so the day-to-day variability in intakes may not have been totally removed from the data. Standard errors were not available for this data set.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 73.0 79.4 95.5 113.6 137.1 145.5 194.0 77.6 94.9 114.1 139.4 165.3 177.7 423.9 70.1 83.7 104.4 137.6 168.2 190.7 378.7 79.3 95.3 117.7 151.0 185.3 256.8 395.1 65.9 85.6 119.3 158.3 216.6 334.6 598.3 72.1 91.9 126.3 182.3 254.8 358.8 617.0 68.6 91.1 127.1 177.7 264.0 400.4 1,176.1 66.6 88.7 121.3 175.9 293.3 503.2 1,237.8 62.9 84.3 123.5 186.9 372.9 629.5 1,301.6 64.1 82.5 118.0 169.4 349.1 605.8 1,131.6 70.2 87.5 111.7 141.3 188.9 232.7 621.3 55.0 68.9 94.2 130.7 179.6 226.4 723.0 52.9 67.0 90.1 129.2 176.6 233.8 721.6 55.4 72.8 102.3 151.4 311.6 552.2 1,132.9 63.5 86.0 123.7 185.9 422.1 655.7 1,236.1 70.8 89.7 119.2 175.0 386.0 607.9 1,178.6 96.7 129.4 185.0 237.1 266.7 359.6 540.0 103.9 137.2 181.9 236.4 287.8 296.7 418.6 70.6 88.1 116.3 158.8 246.3 427.6 1,131.0 69.6 87.4 115.9 158.1 246.7 430.3 1,131.2 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-3 Dietary Vitamin E Intake (α-Tocopherol Equivalents, mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 414 12.3 7.5 8.8 Standard error   0.3 0.3 0.3 Both sexes, 7–12 mo 579 8.5 4.1 4.8 Standard error   0.3 0.2 0.3 Both sexes 1–3 y 3,624 5.5 3.4 3.9 Standard error   0.1 0.1 0.1 Both sexes, 4–8 y 4,664 7.2 4.7 5.3 Standard error   0.2 1.0 0.8 M, 9–13 y 1,262 9.1 5.1 6.0 Standard error   0.5 0.3 0.3 M, 14–18 y 938 12.0 5.9 6.8 Standard error   1.9 0.3 0.4 M, 19–30 y 1,960 11.6 6.8 7.9 Standard error   0.5 0.3 0.3 M, 31–50 y 2,611 12.1 6.3 7.6 Standard error   0.7 0.7 0.8 M, 51–70 y 2,029 10.6 5.3 6.3 Standard error   0.2 0.2 0.2 M, 71+ y 1,322 9.8 4.8 5.8 Standard error   0.4 0.2 0.2 F, 9–13 y 1,279 7.8 4.1 4.9 Standard error   0.2 0.1 0.2 F, 14–18 y 707 7.9 4.0 4.8 Standard error   0.5 0.2 0.3 F, 19–30 y 1,106 8.5 4.3 5.2 Standard error   0.4 0.3 0.4 F, 31–50 y 2,644 8.2 4.3 5.2 Standard error   0.3 0.3 0.3 F, 51–70 y 2,145 7.7 3.5 4.4 Standard error   0.3 0.3 0.3 F, 71+ y 1,436 8.0 4.1 4.9 Standard error   0.3 0.3 0.3 Pregnant 214 10.1 5.0 6.3 Standard error   1.2 0.5 0.7 Lactating 100 12.0 6.6 7.7 Standard error   1.5 0.6 0.8 All individuals (+P/L) 29,028 9.2 5.3 6.2 Standard error   0.1 0.7 0.6 All individuals 28,720 9.3 5.1 6.0 Standard error   0.1 0.7 0.6 NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of vitamin E, computed using intake from food sources alone. Dietary intake data are from NHANES III, and the distribution was adjusted using C-SIDE and the method presented in Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. Data corresponding to age groups 0–6 months, 7–12 months, and 1–3 years of age were not adjusted because no replicate vitamin E intake data are available for children under 3 years.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 9.5 10.7 12.2 13.7 15.2 16.1 17.8 0.3 0.3 0.4 0.4 0.4 0.5 0.6 5.3 6.4 8.2 10.3 12.1 13.1 14.8 0.4 0.5 0.4 0.6 0.8 0.7 0.6 4.1 4.7 5.3 6.1 6.9 7.4 8.5 0.1 0.1 0.1 0.1 0.2 0.2 0.3 5.7 6.3 7.1 8.1 9.0 9.6 10.9 0.7 0.5 0.3 0.3 0.6 0.9 1.5 6.5 7.5 8.8 10.4 12.0 13.2 15.7 0.3 0.3 0.4 0.6 0.7 0.8 1.1 7.6 9.2 11.3 13.8 17.2 19.7 25.4 0.5 0.8 1.2 2.3 4.2 6.0 11.4 8.5 9.8 11.4 13.2 15.0 16.1 18.4 0.3 0.4 0.5 0.7 0.7 0.8 1.0 8.4 9.9 11.7 13.9 16.3 17.8 21.3 0.8 0.8 0.8 0.8 0.9 1.0 1.3 7.0 8.4 10.1 12.4 14.9 16.6 20.7 0.2 0.2 0.2 0.3 0.4 0.6 1.0 6.4 7.6 9.3 11.4 13.9 15.7 20.0 0.3 0.2 0.3 0.5 0.9 1.1 1.9 5.4 6.4 7.5 9.0 10.5 11.5 13.9 0.3 0.2 0.3 0.3 0.3 0.3 0.5 5.4 6.3 7.6 9.2 10.9 12.1 14.7 0.3 0.3 0.4 0.6 0.8 1.0 1.5 5.8 6.9 8.2 9.9 11.6 12.8 15.6 0.4 0.4 0.4 0.6 0.7 0.7 2.1 5.7 6.7 8.0 9.5 11.1 12.1 14.3 0.3 0.3 0.3 0.3 0.5 0.6 0.9 4.9 6.0 7.4 9.1 11.0 12.3 15.1 0.3 0.3 0.3 0.3 0.5 0.7 1.1 5.4 6.4 7.7 9.3 11.0 12.2 14.7 0.3 0.2 0.3 0.4 0.6 0.8 1.2 7.0 8.3 9.8 11.6 13.5 14.9 18.1 0.9 1.1 1.2 1.4 1.7 1.9 2.5 8.4 9.8 11.6 13.8 16.1 17.7 21.2 0.9 1.1 1.4 1.8 2.3 2.7 3.5 6.7 7.7 9.0 10.4 11.5 12.9 14.9 0.5 0.4 0.2 0.3 0.7 1.0 1.6 6.6 7.8 8.9 10.5 12.0 13.1 15.3 0.5 0.4 0.2 0.3 0.7 0.9 1.6 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-4 Dietary α-Tocopherol Intake (mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 4–8 y 3,455 5.7 4.2 4.6 Standard error   0.1 2.2 1.8 M, 9–13 y 1,223 7.4 1.6 2.6 Standard error   0.3 0.1 0.1 M, 14–18 y 913 9.9 1.5 2.6 Standard error   1.6 0.1 0.2 M, 19–30 y 1,905 9.6 2.1 3.6 Standard error   0.3 0.1 0.2 M, 31–50 y 2,532 9.6 2.2 3.5 Standard error   0.2 0.1 0.1 M, 51–70 y 1,943 8.9 1.8 2.9 Standard error   0.2 0.1 0.2 M, 71+ y 1,256 8.2 1.6 2.5 Standard error   0.4 0.1 0.1 F, 9–13 y 1,241 6.3 1.5 2.3 Standard error   0.2 0.1 0.1 F, 14–18 y 1,029 6.9 1.2 2.4 Standard error   0.4 0.1 0.2 F, 19–30 y 2,204 7.1 1.4 2.4 Standard error   0.2 0.1 0.1 F, 31–50 y 3,060 7.4 1.7 2.8 Standard error   0.3 0.1 0.1 F, 51–70 y 2,080 6.6 1.4 2.4 Standard error   0.3 0.1 0.1 F, 71+ y 1,369 6.5 1.3 2.0 Standard error   0.3 0.1 0.1 All individuals 29,136 7.5 3.0 3.9 Standard error   0.1 0.3 0.3 NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of vitamin E, computed using intake from food sources alone. Dietary intake data are from NHANES III, and the distribution was adjusted using C-SIDE and the method presented in Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 4.8 5.2 5.6 6.1 6.6 6.9 7.5 1.5 1.0 0.3 0.7 1.7 2.4 4.0 3.3 4.4 6.4 9.2 12.4 15.5 24.9 0.2 0.2 0.2 0.3 0.7 1.2 3.3 3.5 5.3 7.7 11.4 16.2 22.0 51.9 0.2 0.2 0.4 0.9 2.8 5.6 28.2 4.4 5.9 8.5 11.9 15.6 19.2 29.3 0.2 0.2 0.3 0.4 0.7 1.1 2.4 4.4 5.9 8.4 11.9 15.9 19.8 30.7 0.1 0.1 0.2 0.2 0.4 0.7 1.9 3.7 5.1 7.5 10.8 15.1 19.5 33.3 0.2 0.3 0.2 0.5 0.6 1.0 2.7 3.2 4.3 6.5 9.8 14.3 19.2 35.6 0.2 0.2 0.2 0.4 0.9 1.6 4.3 2.9 3.9 5.6 7.7 10.1 12.6 20.0 0.1 0.1 0.2 0.3 0.4 0.6 1.5 2.9 3.8 5.6 8.6 11.9 15.1 27.8 0.2 0.1 0.3 0.5 0.7 1.6 4.7 3.0 4.2 6.1 8.7 11.9 15.2 24.9 0.1 0.1 0.1 0.3 0.5 0.8 2.1 3.3 4.4 6.4 9.2 12.5 14.8 24.0 0.1 0.1 0.3 0.5 1.0 1.0 2.6 2.9 3.9 5.6 8.1 11.0 14.0 24.8 0.1 0.1 0.2 0.3 0.6 1.1 3.4 2.6 3.7 5.2 7.6 11.6 15.4 26.9 0.1 0.1 0.1 0.3 0.7 1.1 3.0 4.5 5.6 7.1 9.0 11.1 12.6 16.1 0.2 0.2 0.1 0.1 0.4 0.6 1.1 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-5 Total (Diet + Supplements) Vitamin E Intake (α-Tocopherol Equivalents, mg): Mean and Selected Percentiles, United States, NHANES III, 1988–1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 414 12.6 7.4 8.6 Both sexes, 7–12 mo 579 9.3 3.9 4.9 Both sexes 1–3 y 3,624 11.5 3.4 4.2 Both sexes, 4–8 y 4,664 13.2 4.9 5.4 M, 9–13 y 1,262 13.6 5.0 6.4 M, 14–18 y 938 16.8 6.0 7.0 M, 19–30 y 1,960 22.8 6.7 8.1 M, 31–50 y 2,611 26.6 6.4 7.8 M, 51–70 y 2,029 35.3 5.3 6.5 M, 71+ y 1,322 39.9 5.1 6.2 F, 9–13 y 1,279 12.8 4.1 4.9 F, 14–18 y 707 12.2 4.3 4.9 F, 19–30 y 1,106 17.7 4.8 5.5 F, 31–50 y 2,644 30.1 4.4 5.5 F, 51–70 y 2,145 44.9 3.6 4.8 F, 71+ y 1,436 36.8 4.1 5.3 Pregnant 214 31.6 4.7 7.0 Lactating 100 29.2 7.5 8.3 All individuals (+P/L) 29,028 25.7 5.3 6.4 All individuals 28,720 25.7 5.0 6.2 NOTE: Estimated mean and selected percentiles of the usual intake distribution of vitamin E, computed using intakes from food and supplement sources. Dietary intake data are from NHANES III. Intakes from food were adjusted using C-SIDE and the method presented by Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. However, intakes from supplements are unadjusted, so the day-to-day variability in intakes may not have been totally removed from the data. Standard errors were not available for this data set.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 9.2 10.7 12.3 13.7 16.0 17.5 21.0 5.7 6.8 8.8 11.2 13.2 14.8 18.1 4.3 5.1 6.2 17.7 21.3 34.7 36.4 5.9 6.8 8.0 20.2 23.6 36.5 39.5 6.8 7.9 9.6 13.0 24.6 34.9 67.8 7.8 9.6 11.5 15.3 23.0 40.4 121.2 8.6 10.1 12.1 15.3 42.1 53.0 239.8 8.6 10.5 12.9 18.1 43.1 73.9 243.1 7.3 8.9 11.7 29.5 46.6 116.1 444.0 6.5 8.2 10.8 36.1 70.2 141.4 443.6 5.6 6.6 8.4 11.8 32.2 37.7 42.0 5.5 6.8 8.0 11.1 20.1 37.6 41.9 6.2 7.1 9.2 13.2 38.0 40.4 137.1 6.2 7.3 9.1 25.7 40.3 107.4 420.4 5.6 6.9 9.1 36.9 106.4 191.7 508.7 6.1 7.2 8.9 36.9 69.7 140.2 437.7 7.9 9.0 24.5 39.7 43.2 47.3 416.8 9.5 12.2 25.5 39.3 42.5 114.3 141.0 7.1 8.3 9.9 19.1 39.9 69.1 409.0 7.0 8.2 9.9 18.3 39.8 69.5 409.0 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-6 Dietary Selenium Intake (µg): Mean and Selected Percentiles, United States, NHANES III, 1988 –1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 793 18.8 3.2 7.7 Both sexes, 7–12 mo 827 37.4 9.1 14.7 Both sexes, 1–3 y 3,309 65.5 15.5 27.0 Both sexes, 4–8 y 3,456 86.8 48.0 58.0 Standard error   1.5 8.4 6.9 M, 9–13 y 1,223 116.0 57.0 70.0 Standard error   5.2 2.5 3.7 M, 14–18 y 914 142.7 67.0 85.0 Standard error   4.2 3.0 4.4 M, 19–30 y 1,906 158.5 81.0 100.0 Standard error   3.5 2.9 3.5 M, 31–50 y 2,536 151.1 74.0 92.0 Standard error   3.3 3.0 3.2 M, 51–70 y 1,946 133.7 64.0 80.0 Standard error   2.6 1.9 1.9 M, 71+ y 1,257 112.0 57.0 69.0 Standard error   2.0 1.4 1.5 F, 9–13 y 1,241 91.9 53.0 63.0 Standard error   1.4 1.6 1.4 F, 14–18 y 697 87.9 44.0 54.0 Standard error   3.1 2.4 2.5 F, 19–30 y 1,084 103.3 52.0 62.0 Standard error   8.8 2.4 3.2 F, 31–50 y 2,587 100.5 55.0 66.0 Standard error   2.2 2.5 2.8 F, 51–70 y 2,080 93.7 51.0 61.0 Standard error   1.7 2.3 2.3 F, 71+ y 1,370 83.3 46.0 55.0 Standard error   1.7 1.0 1.0 Pregnant 211 115.9 60.0 73.0 Standard error   6.4 5.6 5.3 Lactating 9 6 139.2 86.0 99.0 Standard error   8.3 6.1 6.8 All individuals (+P/L) 27,528 113.7 43.0 57.0 Standard error   1.1 1.9 1.7 All individuals 27,226 113.5 43.0 57.0 Standard error   1.1 1.9 1.8 NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of selenium, computed using intake from food sources alone. Dietary intake data are from NHANES III, and the distribution was adjusted using C-SIDE and the method presented in Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. Data corresponding to age groups 0–6 months, 7–12 months, and 1–3 years of age not adjusted because no replicate selenium intake data are available for children under 3 years.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 9.8 13.5 17.0 22.2 29.9 36.0 56.9 17.1 23.4 32.2 46.9 64.4 75.1 109.9 33.4 45.4 61.1 80.5 101.7 121.7 155.7 63.0 73.0 85.0 99.0 113.0 122.0 142.0 5.9 3.9 1.7 3.1 7.1 10.1 17.1 78.0 93.0 112.0 134.0 159.0 176.0 216.0 5.0 5.2 3.6 7.3 13.6 14.7 27.6 95.0 114.0 138.0 166.0 196.0 216.0 258.0 5.3 5.3 3.8 4.9 5.9 7.5 19.2 111.0 131.0 154.0 181.0 211.0 231.0 276.0 3.8 3.9 3.6 3.8 4.7 5.4 7.4 102.0 121.0 146.0 175.0 206.0 228.0 280.0 3.1 2.9 3.4 4.0 5.3 7.0 12.3 89.0 105.0 128.0 155.0 186.0 208.0 261.0 1.9 1.9 2.3 3.1 5.3 7.5 14.1 77.0 91.0 108.0 129.0 152.0 167.0 202.0 1.6 1.7 1.9 2.5 3.5 4.5 7.0 69.0 79.0 90.0 104.0 117.0 125.0 143.0 1.3 1.3 1.4 1.6 2.1 2.6 3.8 61.0 72.0 86.0 101.0 118.0 129.0 153.0 2.6 2.8 3.1 3.5 4.2 4.8 6.6 68.0 81.0 99.0 120.0 143.0 159.0 200.0 4.0 4.3 8.0 11.5 18.1 22.1 39.0 72.0 83.0 98.0 115.0 132.0 144.0 170.0 2.6 2.1 2.1 2.7 4.0 5.9 9.4 68.0 78.0 92.0 107.0 123.0 133.0 157.0 2.3 2.0 1.7 1.9 2.7 3.4 5.4 61.0 70.0 82.0 94.0 108.0 117.0 138.0 1.0 1.1 1.4 2.1 3.1 4.1 7.1 81.0 95.0 113.0 134.0 154.0 167.0 194.0 5.3 5.8 6.6 7.8 9.1 10.1 12.5 107.0 121.0 137.0 156.0 174.0 186.0 209.0 7.3 7.9 8.7 9.3 10.2 10.9 13.1 66.0 83.0 106.0 136.0 170.0 194.0 250.0 1.3 1.1 1.2 1.5 2.4 4.2 8.2 66.0 83.0 106.0 136.0 170.0 193.0 250.0 1.3 1.1 1.2 1.5 2.5 4.2 8.2 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids TABLE C-7 Total (Diet + Supplements) Selenium Intake (µg): Mean and Selected Percentiles, United States, NHANES III, 1988 –1994 Sexa and Age Number of Persons Examined Selected Percentiles     Mean 1st 5th Both sexes, 0–6 mo 793 35.3 17.2 24.0 Both sexes, 7–12 mo 827 49.7 25.7 31.8 Both sexes, 1–3 y 3,309 69.2 32.7 43.3 Both sexes, 4–8 y 3,456 87.0 49.4 58.2 M, 9–13 y 1,223 116.6 58.2 72.4 M, 14–18 y 914 143.8 68.7 87.9 M, 19–30 y 1,906 160.9 81.6 103.4 M, 31–50 y 2,536 154.1 74.2 94.3 M, 51–70 y 1,946 136.2 65.8 80.9 M, 71+ y 1,257 116.4 57.8 71.4 F, 9–13 y 1,241 92.5 53.6 65.3 F, 14–18 y 697 88.7 41.6 56.4 F, 19–30 y 1,084 105.1 53.9 63.9 F, 31–50 y 2,587 103.5 56.7 67.0 F, 51–70 y 2,080 98.4 53.6 63.3 F, 71+ y 1,370 87.7 47.0 56.5 Pregnant 211 123.9 52.0 82.5 Lactating 96 132.9 79.3 97.4 All individual (+P/L) 27,528 116.1 42.9 57.7 All individuals 27,226 116.0 43.1 57.8 NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of selenium, computed using intakes from food and supplement sources. Dietary intake data are from NHANES III. Intakes from food were adjusted using C-SIDE and the method presented by Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distribution. J Am Stat Assoc 91:1440–1449. However, intakes from supplements are unadjusted, so the day-to-day variability in takes may not have been totally removed from the data. Standard errors were not available for this data set.

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DRI DIETARY REFERENCE INTAKES FOR Vitamin C, Vitamin E, Selenium, and Carotenoids 10th 25th 50th 75th 90th 95th 99th 26.4 30.7 34.2 39.3 45.2 49.1 66.9 34.3 40.5 46.9 56.0 68.5 77.1 99.7 47.5 55.1 66.4 80.4 93.4 107.0 126.5 63.3 73.0 84.8 98.8 113.3 122.2 139.7 79.1 92.8 111.1 136.2 160.6 172.5 203.1 98.7 115.0 139.3 167.0 195.6 219.0 263.1 114.8 131.7 156.1 184.3 213.4 233.6 291.1 103.0 123.2 147.8 178.5 209.4 235.9 286.4 89.9 106.3 129.9 156.6 189.8 215.9 256.9 79.2 92.3 112.1 134.1 157.5 173.2 222.2 69.9 78.2 91.2 105.0 116.7 124.1 150.9 62.3 71.9 87.3 103.4 119.0 130.2 159.3 68.0 81.7 101.0 122.7 150.3 159.5 184.9 72.5 84.6 100.2 119.0 136.9 147.9 178.4 68.7 80.6 95.8 112.5 128.7 142.5 174.8 61.7 71.0 84.6 100.2 115.1 128.2 160.1 86.8 97.4 118.0 146.8 180.5 186.1 199.1 101.4 110.5 131.6 154.4 168.4 169.8 203.5 67.3 84.6 108.6 139.5 175.4 197.8 250.3 67.4 84.6 108.5 139.1 175.0 197.6 250.4 a M = male, F = female. SOURCE: Iowa State University Department of Statistics, 1999.