Table 1 Distribution of smoking before and during pregnancy among Canadian mothers (2005/06)

Drinking alcohol before pregnancy

45,260

62.3 (61.0, 63.5)

Drinking alcohol during pregnancy

7,799

10.8 (10.0, 11.5)

Drinking alcohol during pregnancy frequency

   Never

64,728

89.2 (88.5, 90.0)

   Less than once a month

5,488

7.6 (6.9, 8.3)

   Once a month

1,353

1.9 (1.5, 2.2)

   2 to 3 times a month

393

0.5 (0.4, 0.7)

   Once a week

474

0.7 (0.4, 0.9)

   2 to 3 times a week

91

0.1 (0.0, 0.2)

   4 to 6 times a week

0

-

   Everyday

0

-

Number of drinks per day during pregnancy‡

   Less than 1 drink

3,320

42.6 (38.5, 46.8)

   1 drink

4,138

53.2 (49.0, 57.3)

   2 drinks

196

2.5 (1.2, 3.8)

   3 or more drinks

130

1.7 (0.6, 2.7)