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Table 1 Characteristics of women 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 intake Never n = 11613 (%) 0 - 5 units n = 43455 (%) 6 - 20 units n = 6059 (%) >20 units n = 114 (%)
Maternal age     
<20 years 649 (5.6) 2082 (4.8) 290 (4.8) 18 (15.8)
20-24 years 2031 (17.5) 5745 (13.2) 962 (15.9) 33 (28.9)
25-29 years 3463 (29.8) 9924 (22.8) 1275 (21.0) 28 (24.6)
30-34 years 3374 (29.1) 15059 (34.7) 2077 (34.3) 20 (17.5)
35-39 years 1746 (15.0) 9015 (20.7) 1224 (20.2) 11 (9.6)
>40 years 350 (3.0) 1630 (3.8) 231 (3.8) 4 (3.5)
Single Marital status 3151 (27.1) 14615 (33.6) 2567 (42.4) 91 (79.8)
Socioeconomic group     
Professional/Manager/Employer 1596 (13.7) 10893 (25.1) 1838 (30.3) 9 (7.9)
Home duties 3763 (32.4) 8193 (18.9) 763 (12.6) 9 (7.9)
Non-manual 2207 (19.0) 14935 (34.4) 2194 (36.2) 36 (31.6)
Manual 414 (3.6) 1948 (4.5) 248 (4.1) 11 (9.6)
Unemployed 2856 (24.6) 5403 (12.4) 695 (11.5) 37 (32.4)
Non-classifiable 770 (6.6) 2069 (4.8) 321 (5.3) 12 (10.5)
Irish Nationality 4953 (42.7) 37326 (85.9) 5519 (91.1) 103 (90.4)
Nationality - Region     
Western Europe 5411 (46.6) 39932 (91.9) 5862 (96.7) 109 (95.6)
Asia/Middle East 1852 (15.9) 377 (0.9) 10 (0.2) 0 (0.0)
Eastern Europe 1250 (10.8) 1151 (2.6) 13 (0.2) 0 (0.0)
Africa 2795 (24.1) 844 (1.9) 12 (0.2) 2 (1.8)
South America 58 (0.5) 77 (0.2) 2 (0.03) 0 (0.0)
North America 42 (0.4) 279 (0.6) 41 (0.7) 1 (0.9)
Australia & New Zealand 8 (0.1) 132 (0.3) 15 (0.2) 1 (0.9)
Private Health Care 1154 (9.9) 12087 (27.8) 2382 (39.3) 4 (3.5)
Nulliparous 3725 (32.0) 17719 (40.8) 3692 (60.9) 78 (68.4)
Unplanned pregnancy 4152 (35.8) 14750 (33.9) 2368 (39.1) 85 (74.6)
Gestation at booking     
<12 weeks 1455 (12.5) 8002 (18.4) 1250 (20.6) 15 (13.2)
12-20 weeks 5912 (50.9) 26260 (60.4) 3588 (59.2) 62 (54.4)
>20 weeks 2651 (22.8) 4349 (10.8) 460 (7.6) 12 (10.5)
Smoked during pregnancy 2102 (18.1) 9917 (22.8) 1776 (29.3) 80 (70.2)
Illicit drug use (ever) 171 (1.5) 311 (0.7) 53 (0.9) 10 (8.8)
Social worker referral 2471 (21.3) 5025 (11.6) 753 (12.4) 45 (39.5)