Table I.
Maternal characteristics by alcohol consumption in the last 2 months of pregnancy
| Alcohol consumption (units/wk) |
|||
|---|---|---|---|
| Never, no. (%) (N = 3780) | <1, no. (%) (N = 2947) | ≥1, no. (%) (N = 1475) | |
| Mother’s age | |||
| <20 y | 108 (3) | 40 (1) | 9 (1) |
| 20-24 y | 684 (18) | 338 (11) | 81 (5) |
| 25-29 y | 1564 (41) | 1258 (43) | 466 (32) |
| 30-34 y | 1077 (28) | 983 (33) | 630 (43) |
| ≥35 y | 347 (9) | 328 (11) | 289 (20) |
| Parity | |||
| 0 | 1727 (46) | 1284 (44) | 619 (42) |
| 1 | 1255 (33) | 1095 (37) | 527 (36) |
| ≥2 | 716 (19) | 510 (17) | 299 (20) |
| Unknown | 82 (2) | 58 (2) | 30 (2) |
| Maternal body mass index (kg/m2) | |||
| <18.5 | 171 (5) | 109 (4) | 54 (4) |
| 18.5-24.99 | 2527 (67) | 2108 (72) | 1083 (73) |
| 25-29.99 | 549 (15) | 403 (14) | 188 (13) |
| ≥30 | 217 (6) | 116 (4) | 53 (4) |
| Unknown | 316 (8) | 211 (7) | 97 (7) |
| Mother’s education level | |||
| <Ordinary level | 1098 (29) | 558 (19) | 225 (15) |
| Ordinary level | 1468 (39) | 1089 (37) | 387 (26) |
| ≥Advanced level | 1198 (32) | 1292 (44) | 861 (58) |
| Unknown | 16 (<1) | 8 (<1) | 2 (<1) |
| Housing tenure | |||
| Owned/mortgaged | 2915 (77) | 2477 (84) | 1261 (85) |
| Rented (public housing) | 436 (12) | 194 (7) | 64 (4) |
| Rented (nonpublic housing) | 257 (7) | 152 (5) | 99 (7) |
| Unknown/other | 172 (5) | 124 (4) | 51 (3) |
| Financial difficulties | |||
| None | 1425 (38) | 1111 (38) | 657 (45) |
| Some | 1337 (35) | 1144 (39) | 499 (34) |
| Many | 904 (24) | 627 (21) | 279 (19) |
| Unknown | 114 (3) | 65 (2) | 40 (3) |
| Maternal asthma | 246 (7) | 175 (6) | 81 (5) |
| Maternal eczema | 422 (11) | 358 (12) | 179 (12) |
| Maternal rhinoconjunctivitis | 665 (18) | 585 (20) | 292 (20) |
| Maternal migraine | 577 (15) | 398 (14) | 188 (13) |
| Maternal anxiety score in pregnancy | |||
| 0-4 | 1920 (51) | 1514 (51) | 757 (51) |
| 5-9 | 1218 (32) | 951 (32) | 468 (32) |
| ≥10 | 335 (9) | 269 (9) | 145 (10) |
| Unknown | 307 (8) | 213 (7) | 105 (7) |
| Prenatal tobacco exposure (maximum in pregnancy) | |||
| Not exposed | 1659 (44) | 1436 (49) | 695 (47) |
| Passive only | 1267 (34) | 967 (33) | 472 (32) |
| Mother 1-9/d | 283 (7) | 225 (8) | 145 (10) |
| Mother 10-19/d | 395 (10) | 211 (7) | 101 (7) |
| Mother ≥20/d | 158 (4) | 97 (3) | 54 (4) |
| Unknown | 18 (<1) | 11 (<1) | 8 (1) |
| Maternal paracetamol use in early pregnancy | |||
| Nonuser | 1873 (50) | 1260 (43) | 600 (41) |
| User | 1850 (49) | 1654 (56) | 857 (58) |
| Unknown | 57 (2) | 33 (1) | 18 (1) |
| Maternal paracetamol use in late pregnancy | |||
| Nonuser | 2219 (59) | 1580 (54) | 774 (52) |
| User | 1447 (38) | 1296 (44) | 662 (45) |
| Unknown | 114 (3) | 71 (2) | 39 (3) |
| Antibiotic use in late pregnancy | 203 (5) | 209 (7) | 93 (6) |
| Maternal cold/flu in pregnancy | 1478 (39) | 1230 (42) | 659 (45) |
| Maternal urinary infection in pregnancy | 198 (5) | 157 (5) | 79 (5) |
| Maternal other infections in pregnancy | 185 (5) | 191 (6) | 97 (7) |
Includes all women with complete data for at least 1 childhood outcome (wheeze, eczema, hay fever, asthma, atopy, IgE) and self-reported alcohol consumption in the last 2 months of pregnancy.