Were you taking the vitamin folic acid most days in the month before you became pregnant?
Percent
Yes
30.4%
No
64.2%
I don't know
5.3%
(n = 1,845)
All results are weighted.
These results are for surveys that were mailed to mothers from November 1998 through October 1999.
Child's dates of birth were from 8/1/98 through 8/9/99.
The number of respondents (n) is the number of women who chose the responses above.
