Study protocol: Asking QUestions about Alcohol in pregnancy (AQUA): a longitudinal cohort study of fetal effects of low to moderate alcohol exposure

Table 1 AQUA cohort recruitment in antenatal clinics; 25 July 2011 to 31 July 2012

	Clinic	Clinic 1	Clinic 2	Clinic 3	Clinic 4	Clinic 5	Clinic 6	Clinic 7	Total
Women approached	Participated and completed Questionnaire 1	242	190	99	563	472	478	106	2146
	Did not participate (reason):
	Declined; too busy; not interested	136	91	185	127	235	412	52	1238
	Consented, but never returned any questionnaires	93	82	95	197	174	156	88	889
	Abstinent or no alcohol in lifetime*	65	29	0	62	87	207	7	457
	Moving interstate/overseas; delivering elsewhere	5	0	2	5	5	40	1	58
Women not approached	Over 18 weeks gestation	59	58	28	297	421	2797	133	3793
Women not approached	Less than 16 years of age	1	0	0	1	0	4	1	7
	Multiple pregnancy	11	0	1	23	47	6	1	89
	Not enough English**	124	75	187	333	253	610	42	1624
	Pregnancy not viable	2	0	1	0	0	7	0	10
	Missed in clinic	65	25	16	110	186	579	140	1121
	Already in other research	13	0	0	147	1	37	2	200
	Midwife decision not to approach	5	8	2	14	8	59	4	100
	Total	821	558	616	1879	1889	5392	577	11 732

*recruitment of abstinent women ceased on April 12, 2012, when target number was achieved.
**includes three pregnant women with either a hearing, vision or intellectual impairment.

ISSN: 1471-2393