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Table 2 Perinatal outcomes according to reported alcohol behaviour at first antenatal visit in 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

Ex-drinker versus Non-drinker

Current drinker versus Non-drinker

n= 708 (%)

n= 5649 (%)

n= 368 (%)

Crude OR (95% CI)

Crude OR (95% CI)

Adjusted iOR (95% CI)

Adjusted iOR (95% CI)

Preterm birth < 37 weeks

53 (7.5)

345 (6.1)

23 (6.2)

0.79 (0.59-1.07)

0.82 (0.49-1.35)

1.11 (0.75-1.63)

0.56 (0.32-1.12)

Very preterm birth < 32 weeks

11 (1.6)

71 (1.3)

4 (1.1)

0.79 (0.42-1.51)

0.69 (0.22-2.18)

0.87 (0.41-1.84)

0.47 (0.14-1.16)

Low birth weight < 2500g

41 (5.8)

259 (4.6)

22 (6.0)

0.77 (0.55-1.08)

1.02 (0.60-1.74)

0.82 (0.55-1.21)

0.69 (0.39-1.22)

Very low birth weight < 1000g

5 (0.7)

24 (0.4)

3 (0.8)

0.59 (0.23-1.55)

1.14 (0.27-4.79)

0.54 (0.20-1.46)

0.91 (0.20-4.13)

Intrauterine growth restriction ii

91 (12.9)

640 (11.3)

69 (18.8)

0.87 (0.68-1.10)

1.56 (1.11-2.20)*

0.90 (0.68-1.18)

1.23 (0.83-1.83)

Apgar score <3 at 1 minute

8 (1.1)

55 (1.0)

3 (0.8)

0.85 (0.40-1.79)

0.71 (0.19-2.70)

1.12 (0.44-2.89)

0.56 (0.14-2.25)

Apgar score <7 at 5 minutes

6 (0.8)

45 (0.8)

4 (1.1)

0.92 (0.39-2.18)

1.28 (0.36-4.55)

1.12 (0.39-3.22)

0.68 (0.18-2.63)

Admitted to neonatal unit

43 (6.2)

271 (4.8)

20 (5.4)

0.77 (0.55-1.07)

0.92 (0.53-1.60)

0.76 (0.51-1.13)

0.63 (0.35-1.13)

Congenital abnormality (any)

15 (2.1)

46 (0.8)

5 (1.4)

0.37 (0.21-0.81)*

0.63 (0.23-1.74)

0.40 (0.21-0.77)*

0.73 (0.25-2.12)

Perinatal death

5 (0.7)

20 (0.4)

2 (0.5)

0.62 (0.21-1.81)

0.76 (0.15-3.92)

0.87 (0.25-3.02)

0.80 (0.14-4.53)

  1. i Adjusted for maternal age, Irish nationality, unplanned pregnancy, private healthcare, smoker, illicit drug use.
  2. ii Customised birth weight < 10th percentile.
  3. * p<0.05.