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Percentile

Gender/Age Categorya

N

Mean

1st

5th

10th

25th

50th

75th

90th

95th

99th

All individuals

5,527

5.03

1.30

1.90

2.30

3.00

4.10

5.90

8.50

11.10

19.00

SE

 

0.16

0.04

0.04

0.04

0.05

0.09

0.16

0.37

0.68

2.01

All indiv +P/L

5,576

5.04

1.30

1.90

2.30

3.00

4.10

5.90

8.60

11.10

19.00

SE

 

0.16

0.04

0.04

0.05

0.06

0.09

0.16

0.37

0.66

1.97

a SE = standard error; All indiv +P/L = all individuals plus pregnant and lactating women.

SOURCE: Unpublished data on the usual intake distributions for selected B vitamins, K.Dodd and A.Carriquiry, Iowa State University, 1997. Based on transformation of CSFII data using the method of 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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