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Serum transferrin saturation

 

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Table 3.4.a. Serum transferrin saturation: Total population

Geometric mean and selected percentiles of serum concentrations (in %) for the total U.S. population aged 1 year and older, National Health and Nutrition Examination Survey, 1999–2000.

Geometric mean
(95% conf. interval)

Selected percentiles (95% conf. interval)

Sample
size

10th

50th

90th

Males and Females

Total, 1 year and older

22.2

(21.6-22.9)

12.0

(11.4-12.5)

23.5

(22.8-24.1)

38.8

(37.8-40.4)

7845

1–5 years

17.6

(16.7-18.6)

8.20

(7.30-9.20)

19.4

(16.8-20.8)

32.9

(29.7-35.3)

697

6–11 years

19.4

(18.4-20.5)

10.4

(9.40-11.2)

21.1

(18.9-22.4)

34.4

(32.0-35.8)

883

12–19 years

21.5

(20.6-22.4)

11.3

(10.2-12.3)

22.5

(21.5-23.4)

38.7

(36.0-41.4)

2124

20–39 years

23.1

(22.2-24.2)

12.3

(11.2-12.7)

24.5

(23.4-25.5)

42.0

(40.0-44.2)

1468

40–59 years

22.9

(22.0-23.9)

13.1

(12.3-14.1)

23.8

(22.7-25.3)

38.6

(36.4-40.5)

1195

60 years and older

23.2

(22.2-24.3)

13.3

(12.4-14.3)

24.2

(23.1-25.1)

38.4

(36.8-39.6)

1478

Males

Total, 1 year and older

24.7

(23.9-25.6)

14.0

(13.3-14.5)

25.8

(24.8-26.5)

41.8

(40.2-43.8)

3858

1–5 years

17.4

(16.5-18.3)

8.30

(6.80-9.80)

18.3

(16.6-19.8)

32.4

(29.0-34.6)

383

6–11 years

19.1

(17.7-20.7)

10.6

(8.80-11.7)

21.2

(18.9-22.4)

32.2

(28.4-35.5)

460

12–19 years

24.5

(22.9-26.2)

13.3

(11.5-14.5)

25.8

(24.3-26.9)

42.8

(36.3-50.4)

1076

20–39 years

26.9

(26.1-27.7)

16.3

(14.7-17.4)

27.1

(25.7-28.4)

45.9

(43.7-48.8)

631

40–59 years

26.2

(24.7-27.8)

16.0

(14.3-17.9)

26.8

(25.4-28.9)

41.6

(39.8-43.2)

567

60 years and older

25.1

(24.0-26.3)

14.5

(13.3-15.4)

25.9

(24.7-27.3)

41.7

(39.4-43.8)

741

Females

Total, 1 year and older

20.1

(19.5-20.7)

10.4

(9.60-11.3)

21.3

(20.9-21.7)

35.8

(33.6-38.4)

3987

1–5 years

17.9

(15.9-20.1)

7.70

(5.90-10.4)

20.2

(16.2-23.2)

34.1

(29.2-37.1)

314

6–11 years

19.7

(17.8-21.7)

10.1

(8.30-12.2)

21.1

(17.9-23.8)

36.1

(32.6-38.8)

423

12–19 years

18.8

(17.6-20.0)

9.90

(9.10-10.9)

19.8

(18.4-20.9)

32.9

(31.0-36.6)

1048

20–39 years

20.0

(18.8-21.2)

9.00

(7.90-11.1)

21.4

(19.8-23.3)

38.4

(35.0-41.1)

837

40–59 years

20.2

(19.3-21.1)

11.5

(9.20-13.1)

21.5

(20.5-22.5)

34.8

(32.0-37.6)

628

60 years and older

21.7

(20.5-23.0)

12.8

(11.1-14.2)

22.3

(21.1-23.6)

35.4

(31.8-37.9)

737

 

Table 3.4.b. Serum transferrin saturation: Mexican Americans

Geometric mean and selected percentiles of serum concentrations (in %) for Mexican Americans in the U.S. population aged 1 year and older, National Health and Nutrition Examination Survey, 1999–2000.

Geometric mean
(95% conf. interval)

Selected percentiles (95% conf. interval)

Sample
size

10th

50th

90th

Males and Females

Total, 1 year and older

21.5

(20.5-22.5)

10.5

(9.90-11.4)

22.9

(21.6-24.0)

39.3

(37.0-41.2)

2707

1–5 years

16.6

(14.9-18.4)

7.20

(5.40-9.10)

18.3

(16.5-20.1)

32.9

(28.0-38.8)

274

6–11 years

18.8

(17.5-20.2)

10.7

(8.70-12.2)

19.9

(18.5-21.4)

30.8

(28.9-33.1)

361

12–19 years

21.1

(20.2-22.0)

10.6

(9.70-12.0)

22.0

(20.7-22.2)

38.6

(36.4-40.3)

938

20–39 years

23.0

(21.2-24.9)

12.1

(9.30-13.6)

24.2

(21.9-26.9)

41.2

(38.2-48.1)

407

40–59 years

23.4

(22.5-24.2)

12.5

(10.4-15.1)

24.7

(23.3-26.4)

41.1

(37.0-44.2)

344

60 years and older

23.6

(21.9-25.6)

13.2

(11.9-14.9)

24.0

(20.8-27.9)

41.4

(38.0-43.1)

383

Males

Total, 1 year and older

24.6

(23.1-26.2)

13.2

(12.1-14.4)

25.8

(24.2-27.5)

43.7

(40.0-48.1)

1345

1–5 years

16.2

(14.2-18.5)

6.90

(5.10-8.60)

17.0

(15.0-19.8)

32.9

(25.6-41.5)

150

6–11 years

18.7

(16.8-20.8)

10.8

(8.60-12.9)

19.5

(18.2-21.3)

29.6

(27.4-34.2)

198

12–19 years

24.6

(23.3-26.0)

13.3

(12.1-14.9)

25.9

(24.3-27.3)

41.0

(38.7-44.1)

480

20–39 years

28.4

(26.0-30.9)

16.6

(14.6-19.5)

28.6

(25.0-33.0)

49.5

(41.8-56.0)

170

40–59 years

28.6

(26.8-30.5)

18.4

(14.1-21.2)

28.4

(26.7-30.8)

44.6

(40.9-49.3)

152

60 years and older

25.6

(23.9-27.5)

13.3

(10.4-16.3)

27.4

(23.2-30.4)

43.8

(38.5-49.0)

195

Females

Total, 1 year and older

18.6

(17.5-19.7)

8.90

(8.00-10.0)

20.1

(18.9-21.2)

33.2

(31.0-35.8)

1362

1–5 years

17.1

(15.5-18.9)

6.80

(5.20-9.70)

19.8

(16.5-22.7)

33.4

(28.0-37.1)

124

6–11 years

18.9

(17.1-20.9)

10.4

(5.80-13.2)

20.3

(18.8-21.8)

30.8

(29.3-31.7)

163

12–19 years

18.2

(17.1-19.5)

8.70

(7.50-10.3)

19.7

(18.1-21.3)

33.4

(30.2-36.3)

458

20–39 years

18.1

(15.9-20.7)

8.10

(6.80-10.4)

19.0

(16.7-21.9)

32.5

(29.5-38.1)

237

40–59 years

19.3

(18.0-20.7)

8.90

(6.40-12.3)

20.6

(18.5-23.9)

34.1

(31.7-41.0)

192

60 years and older

21.9

(19.8-24.2)

12.8

(11.8-15.1)

23.0

(19.8-24.2)

35.0

(31.9-41.4)

188

 

Table 3.4.c. Serum transferrin saturation: Non-Hispanic blacks

Geometric mean and selected percentiles of serum concentrations (in %) for non-Hispanic blacks in the U.S. population aged 1 year and older, National Health and Nutrition Examination Survey, 1999–2000.

Geometric mean
(95% conf. interval)

Selected percentiles (95% conf. interval)

Sample
size

10th

50th

90th

Males and Females

Total, 1 year and older

20.3

(19.5-21.2)

9.90

(9.30-10.8)

21.6

(20.5-22.7)

36.5

(34.4-39.0)

1773

1–5 years

18.3

(16.4-20.3)

10.2

(8.20-12.5)

19.0

(16.1-21.6)

30.7

(26.6-38.1)

171

6–11 years

19.6

(18.3-21.0)

10.8

(8.60-12.7)

21.3

(19.6-22.3)

31.0

(29.4-34.4)

257

12–19 years

19.7

(18.2-21.3)

10.0

(8.80-11.3)

21.3

(20.0-22.7)

34.9

(32.2-38.3)

582

20–39 years

20.8

(19.4-22.4)

8.90

(7.50-10.7)

22.1

(20.4-24.9)

38.4

(35.3-44.2)

273

40–59 years

20.9

(19.3-22.6)

10.7

(8.50-12.9)

21.4

(19.3-23.2)

37.6

(34.3-42.1)

249

60 years and older

20.2

(18.9-21.6)

11.4

(9.40-12.9)

21.2

(19.6-22.5)

34.9

(30.6-39.0)

241

Males

Total, 1 year and older

23.5

(22.4-24.8)

13.6

(12.5-14.7)

24.5

(22.5-26.1)

39.3

(36.2-41.8)

867

1–5 years

18.7

(16.6-21.2)

10.4†

(9.00-12.4)

19.0

(15.5-22.5)

30.2†

(24.6-40.8)

92

6–11 years

19.7

(17.8-21.7)

10.4

(7.90-13.7)

21.7

(18.9-24.0)

30.1

(28.0-34.3)

126

12–19 years

22.5

(21.3-23.8)

12.2

(11.1-14.4)

24.2

(22.4-25.6)

36.5

(33.6-39.3)

299

20–39 years

26.7

(24.8-28.8)

17.4

(14.3-19.8)

27.1

(24.9-30.1)

40.3

(35.7-45.8)

117

40–59 years

24.2

(21.7-27.0)

13.9

(10.9-16.3)

23.9

(21.4-28.0)

42.2

(37.1-46.8)

120

60 years and older

22.6

(20.8-24.4)

12.9

(11.4-15.8)

22.4

(20.6-24.3)

38.1

(32.1-41.6)

113

Females

Total, 1 year and older

17.8

(16.9-18.7)

8.60

(7.40-9.30)

19.2

(17.9-20.2)

34.3

(31.6-36.0)

906

1–5 years

17.7

(15.2-20.6)

9.40†

(5.30-12.7)

19.4

(14.7-21.8)

29.4†

(26.4-38.1)

79

6–11 years

19.5

(17.8-21.3)

11.5

(6.70-14.1)

21.0

(18.7-22.5)

32.7

(29.4-35.3)

131

12–19 years

17.1

(14.9-19.5)

8.10

(5.50-10.8)

18.9

(15.5-21.5)

32.3

(28.2-37.0)

283

20–39 years

16.9

(15.5-18.4)

7.30

(5.40-8.70)

18.0

(15.9-20.1)

37.4

(33.1-41.7)

156

40–59 years

18.5

(16.3-20.9)

9.90

(6.90-12.0)

19.9

(17.1-21.8)

31.5

(27.1-35.0)

129

60 years and older

18.6

(17.2-20.0)

9.40

(8.70-11.8)

19.9

(17.8-21.7)

31.3

(28.5-35.0)

128

† Estimate is subject to greater uncertainty due to small cell size.

 

Table 3.4.d. Serum transferrin saturation: Non-Hispanic whites

Geometric mean and selected percentiles of serum concentrations (in %) for non-Hispanic whites in the U.S. population aged 1 year and older, National Health and Nutrition Examination Survey, 1999–2000.

Geometric mean
(95% conf. interval)

Selected percentiles (95% conf. interval)

Sample
size

10th

50th

90th

Males and Females

Total, 1 year and older

22.9

(22.0-23.8)

12.6

(11.7-13.2)

24.0

(23.2-24.9)

39.6

(38.3-41.5)

2629

1–5 years

18.7

(16.9-20.6)

9.20

(6.80-11.4)

20.8

(16.5-23.9)

34.0

(29.2-36.7)

167

6–11 years

19.5

(17.9-21.2)

9.90

(8.50-11.6)

21.2

(17.0-23.2)

35.7

(32.0-38.8)

191

12–19 years

22.4

(21.1-23.8)

11.6

(10.2-13.2)

23.2

(21.8-24.1)

41.4

(36.3-44.8)

418

20–39 years

23.8

(22.3-25.5)

12.7

(10.9-14.6)

25.1

(23.5-26.3)

43.5

(40.9-45.2)

608

40–59 years

23.4

(22.0-24.8)

14.0

(12.8-15.1)

24.1

(22.8-25.8)

38.6

(35.6-41.5)

494

60 years and older

23.5

(22.3-24.7)

13.6

(12.4-14.7)

24.5

(23.3-25.6)

38.5

(36.8-39.4)

751

Males

Total, 1 year and older

25.1

(23.9-26.4)

14.4

(13.3-15.3)

25.9

(24.5-27.1)

43.0

(40.2-45.2)

1305

1–5 years

18.5

(16.4-20.8)

9.10†

(6.80-12.3)

20.1

(16.5-23.1)

33.2†

(28.8-36.7)

89

6–11 years

19.2

(17.1-21.7)

9.90†

(6.10-11.7)

21.6

(17.5-23.4)

32.4†

(28.7-36.4)

101

12–19 years

25.3

(22.8-28.0)

13.4

(11.3-14.5)

26.0

(23.0-29.0)

45.2

(38.4-57.1)

213

20–39 years

27.0

(26.2-27.9)

16.4

(14.5-18.0)

26.7

(25.2-28.8)

46.3

(44.1-48.9)

264

40–59 years

26.2

(24.0-28.6)

16.1

(14.1-18.5)

26.2

(24.6-29.2)

40.5

(38.6-43.8)

253

60 years and older

25.3

(24.0-26.7)

14.2

(13.0-15.9)

26.1

(25.0-27.8)

41.9

(39.2-45.4)

385

Females

Total, 1 year and older

20.9

(20.1-21.7)

11.5

(10.4-12.4)

22.0

(21.1-22.9)

36.6

(34.0-39.2)

1324

1–5 years

19.0

(16.4-21.9)

9.20†

(5.10-11.9)

21.1

(15.4-24.5)

34.2†

(29.7-41.2)

78

6–11 years

19.8

(16.8-23.4)

10.2†

(6.60-12.8)

21.1

(15.3-26.2)

38.4†

(34.7-40.6)

90

12–19 years

19.6

(17.4-22.0)

10.1

(9.00-13.6)

19.9

(18.1-22.6)

33.0

(30.7-38.7)

205

20–39 years

21.1

(18.9-23.5)

10.9

(7.80-13.0)

23.0

(19.4-26.3)

39.2

(35.0-42.6)

344

40–59 years

20.8

(19.9-21.7)

12.4

(10.9-13.8)

21.9

(20.4-22.9)

35.6

(31.5-41.0)

241

60 years and older

22.1

(20.8-23.5)

13.1

(11.4-14.8)

22.8

(21.3-24.4)

36.1

(31.8-38.4)

366

† Estimate is subject to greater uncertainty due to small cell size.

 

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