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Table 3 Perinatal outcomes according to alcohol intake peri-conceptionally

From: Prevalence, predictors and perinatal outcomes of peri-conceptional alcohol exposure - retrospective cohort study in an urban obstetric population in Ireland

Alcohol intakei Never n = 11613 (%) Low (0-5 units) n = 43455 (%) Moderate (6 - 20 units) n = 6059 (%) High (>20 units) n = 114 (%)
Gestational age (weeks), median (IQR) 39.9 (38.9 - 40.9) 40.1 (39.1 - 41.0) 40.1 (39.3 - 41.1) 40.1 (39.0 - 41.4)
Birth weight (grams), median (IQR) 3420 (3080 - 3765) 3520 (3175 - 3850) 3490 (3150 - 3810) 3345 (2865 - 3729)
Preterm birth <37 weeks 811 (7.0) 2215 (5.1) 304 (5.0) 13 (11.5)
Very preterm birth <32 weeks 161 (1.4) 438 (1.0) 63 (1.1) 6 (5.3)
Low birth weight <2500 g 619 (5.4) 1766 (4.1) 268 (4.5) 12 (10.7)
Very low birth weight <1000 g 51 (0.4) 162 (0.4%) 27 (0.5) 2 (0.8)
Birth weight <10th centile 1622 (14.2) 5985 (14.0) 906 (15.2) 35 (31.0)
Male infant 5802 (50.8) 21813 (51.1) 3085 (51.7) 60 (53.1)
Perinatal death 97 (0.8) 313 (0.7) 47 (0.8) 2 (1.8)
Apgar score <3 at 1 minute 140 (1.2) 417 (1.0) 68 (1.1) 2 (1.8)
Apgar score <7 at 5 minutes 154 (1.3) 443 (1.0) 71 (1.2) 2 (1.8)
Admitted to neonatal unit 1799 (15.7) 6100 (14.3) 897 (15.0) 23 (20.4)
Congenital abnormality (any) 373 (3.3) 1192 (2.8) 197 (3.3) 3 (2.7)
Aneuploidy (Trisomy 21/13/18, XO) 13 (0.1) 57 (0.1) 6 (0.1) 1 (0.9)
Fetal Alcohol syndrome 0 (0.0) 1 (0.0) 1 (0.0) 1 (0.9)
Dysmorphic features (unclassified) 8 (0.1) 30 (0.1) 5 (0.1) 0 (0.0)
  1. i Reference category for all comparisons - alcohol intake response "Never"