Background variables |
| N | Control | Intervention | p-value |
Age | <30 | 177 | 40.9 | 35.9 | 0.538 |
| 31 - 33 | 138 | 29 | 32.9 |
|
| >34 | 138 | 30.1 | 31.1 |
|
Employment | Full-time | 306 | 63.5 | 75.3 | 0.021 |
| Part-time | 64 | 15.1 | 12.7 |
|
| Other | 81 | 21.4 | 12 |
|
Marital status | Cohabiting with the child’s father | 434 | 94.4 | 98.2 | 0.005 |
| Single | 2 | 0 | 1.2 |
|
| Other family situation | 17 | 5.6 | 0.6 |
|
Previous children | First child | 277 | 62 | 60.5 | 0.307 |
| Second child | 144 | 32.7 | 30.5 |
|
| Third child or more | 30 | 5.3 | 9 |
|
Alcohol use 3 months prior to current pregnancy | Rarely/never | 151 | 31.6 | 37.3 | 0.055 |
| Not more than 1 time/week | 200 | 48.9 | 37.3 |
|
| None | 360 | 79.4 | 79.6 |
|
Tobacco use 3 months prior to current pregnancy | 1 - 9 cigarettes/day | 45 | 8.4 | 12.6 | 0.225 |
| 10 cigarettes/day | 37 | 9.8 | 5.4 |
|
| Snuff | 11 | 2.4 | 2.4 |
|