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Table 2 Age and race/ethnicity of women giving birth in the NCS by eligibility status at the time of consent

From: Impact of preconception enrollment on birth enrollment and timing of exposure assessment in the initial vanguard cohort of the U.S. National Children’s Study

  

Status at consent

  
  

High non-tryer

High tryer

Pregnant

  

%

%

%

Age, years

<18

0

0

1.4

 

18–19

*

0

3.3

 

20–34

90.9

83.7

76.5

 

35+

*

16.3

18.7

 

Mean (standard deviation)

27.7 (4.0)

30.7 (4.1)

29.2 (5.7)

Race/ethnicity

Asian, non-Hispanic

*

*

4.2

 

Black, non-Hispanic

*

*

6.4

 

Hispanic

22.7

10.2

20.0

 

Other^

20.5

20.4

8.0

 

White, non-Hispanic

50.0

67.3

61.5

  1. *Cell counts are too small to display. (Despite age eligibility criteria for high non-tryers, the cell counts for age 35+ are not zero)
  2. ^includes women who report two or more races. For age categories, P < 0.05; For race and ethnicity, P < 0.01
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BMC Medical Research Methodology

ISSN: 1471-2288

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