Table 2.

Alcohol consumption patterns for women consuming any alcohol during the preconception, pre-pregnancy recognition and post-pregnancy recognition periods.

Alcohol measure	Preconception (n=826)	Pre-pregnancy recognition (n=520)	Post-pregnancy recognition (n=190)	p-value
Low-risk drinker,† n (%)	486 (58.8)	379 (72.9)	190 (100.0)
High-risk drinker, n (%)	340 (41.2)	141 (27.1)	0 (0.0)	<0.001
Drinks per drinking day
Mean (SD)	2.13 (1.36)*	2.32 (1.63)+	1.08 (0.34)*+	<0.001
Drinks per week
Mean (SD)	2.61 (4.18)*	2.58 (4.19)+	0.43 (0.03)*+	<0.001
Binge drinking
n (%)	335 (40.6)	112 (21.5)	0 (0.0)	<0.001

Note: Frequencies may vary due to missing cases.

^† Based on the Canadian low-risk drinking guidelines.

*,⁺ Significant differences noted between groups using Scheffe test for multiple comparisons.