Table 1.
Characteristics of women according to alcohol intake in early pregnancy
|
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) |
i Ex-drinkers versus Non-drinkers.
ii Current drinkers versus Non-drinkers.
∫ Reference category.
* p<0.05.