Table 1.
Weighted distribution of alcohol consumption and baseline personal characteristics across maternal age groups
| Maternal Age Groups
|
χ2 p-value | |||
|---|---|---|---|---|
| 20–25 N=1717 |
26–35 N=1367 |
36+ N=313 |
||
| Alcohol consumption: year 1 | ||||
| No alcohol | 71.1% | 61.7% | 42.2% | <0.01 |
| <4 drinks per occasion | 22.1% | 35.0% | 55.1% | |
| 4 or more drinks on occasion | 6.8% | 3.3% | 2.7% | |
| Alcohol consumption: year 3 | ||||
| No alcohol | 58.2% | 45.9% | 37.6% | <0.01 |
| <4 drinkers per occasion | 33.4% | 48.7% | 44.1% | |
| 4 or more drinks on occasion | 8.4% | 5.5% | 18.4% | |
| Alcohol consumption: year 5 | ||||
| No alcohol | 54.2% | 44.0% | 35.4% | <0.01 |
| <4 drinkers per occasion | 37.5% | 46.7% | 38.1% | |
| 4 or more drinks on occasion | 8.3% | 9.3% | 26.6% | |
| Race (1=white) | 20.7% | 35.2% | 50.6% | <0.01 |
| Income (1=greater than 185% poverty line) | 33.7% | 60.0% | 72.8% | <0.01 |
| Education (1=college or graduate degree) | 3.9% | 27.6% | 51.2% | <0.01 |
| Being married | 37.0% | 68.3% | 77.1% | <0.01 |
| Depression in year following childbirth | 9.9% | 7.5% | 12.0% | <0.01 |
| Ever breastfed child | 54.8% | 71.0% | 69.2% | <0.01 |
| Employed before/during pregnancy | 60.6% | 71.4% | 76.0% | <0.01 |
| Smoking during pregnancy (1=yes) | 14.1% | 9.4% | 12.0% | <0.01 |
| Drinking during pregnancy (1=yes) | 7.0% | 11.2% | 25.1% | <0.01 |