Table 2.

Sample Size for Exposure Measures of Frequency and Pattern of Alcohol Consumption for Mother and Partners at 18 and 32 Weeks Gestation

Frequency	None n (%)	<1 glass per week n (%)	1 + glass per week n (%)	1 to 2 glasses per day n (%)	3+ glasses per day n (%)
Mother 18 weeks gestation	6,002 (45%)	5,105 (39%)	1,834 (14%)	212 (2%)	42 (<1%)
Partner 18 weeks gestation	488 (5%)	2,408 (24%)	4,941 (50%)	1,521 (15%)	483 (5%)

Pattern	None n (%)	1 to 2 days n (%)	3 to 4 days n (%)	5 to 10 days n (%)	>10 days n (%)
Mother 18 weeks gestation	10,915 (82%)	1,192 (9%)	482 (4%)	267 (2%)	293 (2%)
Mother 32 weeks gestation	7,255 (83%)	877 (10%)	353 (4%)	179 (2%)	116 (1%)
Partner 32 weeks gestation	1,846 (19%)	1,763 (18%)	1,904 (19%)	2,513 (25%)	1,915 (19%)