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TABLE G-2 Mean and Percentiles for Serum Transferrin Saturation (%), NHANES III (1988–1994)

Sex/Age Categorya

n

Mean

SEMb

Percentile

5th

10th

Both sexes, 1 to 3 y

1,935

18.6

0.3

5.6

7.6

Both sexes, 4 to 8 y

2,865

21.4

0.2

8.9

11.1

M 9 to 13 y

1,097

22.5

0.5

9.4

11.8

M 14 to 18 y

836

27.7

0.7

12.4

14.4

M 19 to 30 y

1,802

30.4

0.4

13.1

16.2

M 31 to 50 y

2,413

29.1

0.3

15.3

17.0

M 51 to 70 y

1,879

27.5

0.4

13.0

15.9

M 71+ y

1,188

27.1

0.4

12.2

14.5

F 9 to 13 y

1,087

22.6

0.6

8.8

10.7

F 14 to 18 y

884

23.4

0.5

7.3

10.0

F 19 to 30 y

1,795

25.4

0.5

8.5

11.3

F 31 to 50 y

2,802

23.4

0.4

7.3

9.9

F 51 to 70 y

1,980

23.6

0.3

11.1

13.0

F 71+ y

1,301

23.9

0.3

11.0

13.2

F Pregnant

318

22.8

1.0

9.3c

10.5

F Lactating

93

25.8c

1.9

10.1c

10.8c

F P/L

407

23.5

0.8

9.7c

10.6

All Individuals

23,864

25.5

0.1

9.6

12.6

All Indiv (+P/L)

24,271

25.5

0.1

9.6

12.5

NOTE: Means, standard errors, and percentiles calculated with WesVar Complex Samples 3.0. Females who had "blank but applicable" pregnancy and lactating status data or who responded "I don't know" to questions on pregnancy and lactating status were excluded from all analyses.

a M = male, F = female, P/L = pregnant and lactating.

b SEM = standard error of the mean.



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