Skip to main content

Table 1 Characteristics of women according to alcohol intake in early pregnancy

From: Behavioural change in relation to alcohol exposure in early pregnancy and impact on perinatal outcomes - a prospective cohort study

Alcohol intake

Non-drinker

Ex-drinker

Current drinker

Odds ratio i

Odds ratio ii

Total

95% confidence

95% confidence

n= 6725

n= 708 (%)

n= 5649 (%)

n= 368 (%)

intervals

intervals

Maternal age

     

< 20 years

27 (3.8)

161 (2.8)

10 (2.7)

0.99 (0.65-1.51)

0.99 (0.46-2.10)

20-29 years

312 (44.0)

1884 (33.3)

117 (31.8)

1.00

1.00

30-39 years

347 (49.0)

3362 (59.4)

214 (58.1)

1.60 (1.36-1.89)*

1.64 (1.25-1.76)*

> 40 years

22 (3.1)

252 (4.5)

27 (7.3)

1.90 (1.21-2.98)*

3.27 (1.79-5.97)*

Single Marital status

302 (42.7)

2211 (39.1)

179 (48.6)

0.83 (0.71-0.98)*

1.24 (0.97-1.61)

Socioeconomic group

     

Professional

149 (21.0)

1823 (32.3)

101 (27.4)

2.69 (2.12-3.42)*

1.24 (0.86-1.78)

Home duties

159 (22.5)

723 (12.8)

87 (23.6)

1.00

1.00

Non-manual

241 (34.0)

2275 (40.2)

111 (30.2)

2.08 (1.67-2.58)*

0.84 (0.60-1.19)

Manual

35 (4.9)

219 (3.9)

13 (3.5)

1.38 (0.93-2.04)

0.68 (0.34-1.35)

Unemployed

78 (11.0)

384 (6.8)

41 (11.1)

1.08 (0.80-1.46)

0.96 (0.61-1.52)

Non-classifiable

46 (6.5)

229 (4.0)

15 (4.1)

1.09 (0.76-1.57)

0.60 (0.32-1.13)

Irish Nationality

472 (66.7)

4732 (83.6)

317 (86.1)

2.56 (2.15-3.04)*

3.05 (2.18-4.27)*

Private Health Care

48 (6.8)

1137 (20.1)

35 (9.5)

3.41 (2.52-4.60)*

1.42 (0.90-2.24)

Nulliparous

270 (38.1)

2548 (45.0)

126 (34.2)

1.31 (1.12-1.54)*

0.84 (0.64-1.09)

Unplanned pregnancy

268 (37.9)

1684 (29.8)

147 (39.9)

0.70 (0.60-0.83)*

1.10 (0.86-1.44)

Gestation at booking

     

< 12 weeks

254 (35.9)

2299 (40.6)

118 (32.1)

1.00

1.00

12-20 weeks

400 (56.5)

3078 (54.4)

215 (58.4)

0.85 (0.72-1.00)

1.16 (0.88-1.52)

> 20 weeks

54 (7.6)

264 (4.7)

33 (9.0)

0.54 (0.39-0.74)*

1.32 (0.81-2.14)

Smoker

127 (17.9)

808 (14.3)

131 (35.6)

0.77 (0.62-0.95)*

2.58 (1.90-3.49)*

Illicit drug use (ever)

52 (7.3)

476 (8.4)

64 (17.4)

1.17 (0.86-1.57)

2.67 (1.80-3.95)*

Social worker referral

32 (4.5)

105 (1.9)

15 (4.1)

0.41 (0.27-0.61)*

0.88 (0.47-1.66)

  1. i Ex-drinkers versus Non-drinkers.
  2. ii Current drinkers versus Non-drinkers.
  3. Reference category.
  4. * p<0.05.