TABLE F-1 Continued

Sexa and Age, y

Number of Persons Examined

Selected Percentiles

   

Mean

1st

5th

F, 9–13

1,045

1.0

0.24

0.4

Standard error

 

0.03

0.03

0.03

F, 14–18

906

0.9

0.15

0.3

Standard error

 

0.04

0.03

0.03

F, 19–30

1,973

0.7

0.11

0.2

Standard error

 

0.02

0.01

0.03

F, 31–50

2,778

0.8

0.09

0.2

Standard error

 

0.02

0.009

0.01

F, 51–70

1,907

0.9

0.12

0.3

Standard error

 

0.03

0.01

0.02

F, 71+

1,251

1.0

0.14

0.3

Standard error

 

0.02

0.02

0.02

All individuals

19,899

0.8

0.09

0.2

Standard error

 

0.01

0.006

0.01

a M = male, F = female.

SOURCE: Iowa State University Department of Statistics, 1999.



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