Comparison of those whose immunisation information could be matched to the cohort and those whose immunisation information could not be matched
| Immunisation information available | ||
|---|---|---|
| Characteristic | Yes (N=749) | No (N=321) |
| Mean age of mothers, years | 29.9 | 28.2* |
| GMS eligible | 15.9% | 22.7%* |
| Smoking in pregnancy | 22.6% | 28.8%* |
| Premature (<37 weeks gestational age on hospital record) | 4.1% | 4% |
| Male sex cohort child | 48.1% | 52.8% |
| Mother educated to third level | 50.1% | 47.2% |
| Father educated to third level | 41.5% | 38.8% |
| Lone parent | 23.2% | 39.5%* |
| Not married | 29.7% | 48.9%* |
| Not working | 31.9% | 39.8%* |
| Complementary or alternative medicine use | 23.8% | 18%* |
| Number of other children, mean | 1.1 | 1.1 |
| Lives in west of Ireland | 36.3% | 20.1%* |
↵* p≤0.05.
GMS, General Medical Services.