Table 8: Use of Folic Acid (FA) During Pregnancy in the Different Study Groups According to Two Study Periods: 1980-1989 and 1990-1996

Control Mothers
Period without epilepsy epileptic without AED epileptic with monotherapy epileptic with polytherapy all epileptics
No. % No. % No. % No. % No. %
1980-1989
FA 13,364 52.8 2 28.6 11 47.8 8 36.4 21 40.4
No FA 11,933 47.2 5 71.4 12 19.2 14 63.6 31 59.6
Subtotal 25,297 100.0 7 100.0 23 100.0 22 100.0 52 100.0
1990-1996
FA 7,367 57.7 1 33.3 17 63.0 5 62.5 23 60.5
No FA 5,397 42.3 2 66.7 10 37.0 3 37.5 15 39.5
Subtotal 12,764 100.0 3 100.0 27 100.0 8 100.0 38 100.0
1980-1996
FA 20,731 54.4 3 30.0 28 56.0 13 43.3 44 48.9
No FA 17,330 45.6 7 70.0 22 44.0 17 56.7 46 51.1
Total 38,061 100.0 10 100.0 50 100.0 30 100.0 90 100.0
Case Mothers
1980-1989
FA 7,107 48.9 2 100.0 13 44.8 8 25.8 23 37.1
No FA 7,439 51.1 0 0.0 16 55.2 23 74.2 39 62.9
Subtotal 14,546 100.0 2 100.0 29 100.0 31 100.0 62 100.0
1990-1996
FA 4,138 50.5 1 16.7 4 26.7 6 50.0 11 33.3
No FA 4,064 49.5 5 83.3 11 73.3 6 50.0 22 66.7
Subtotal 8,202 100.0 6 100.0 15 100.0 12 100.0 33 100.0
1980-1996
FA 11,245 49.4 3 37.5 17 38.6 14 32.6 34 35.8
No FA 11,503 51.6 5 62.5 27 61.4 29 67.4 61 64.2
Total 22,748 100.0 8 100.0 44 100.0 43 100.0 95 100.0