Table I.

Distribution of intake of FA-containing supplements during the 3 months before conception through the time of delivery^*

Category of supplement use	Percent (number)
Took no supplements	2.7 (68)
Took only non-FA-containing supplements	1.5 (39)
Took FA-containing supplements	95.8 (2411)
Total	100 (2518)
Among FA-containing supplement users, months before or after conception when supplement intake began
During the 3 months before conception or earlier	31.3 (789)
First month after conception	21.3 (535)
Second month after conception	23.6 (594)
Third month after conception	11.3 (285)
Fourth month after conception	4.9 (122)
Fifth month after conception	1.9 (48)
Sixth month after conception	0.8 (20)
Seventh month after conception	0.4 (11)
Eighth month after conception	0.2 (6)
Ninth or 10th month after conception	< 0.1 (1)
Total	95.8 (2411)

^*Among 2,518 women with estimated dates of delivery from October, 1997 to December, 2000.