Table 1 |
||
| Demographic characteristics of participants at 2 years of age | ||
| Characteristic | Intervention cohort N = 1374 | Control cohort N = 4780 |
| Mean (SD) | Mean (SD) | |
| Age mother at delivery (years) | 29.8 (4.21) | 29.3 (4.68) |
| Educationa mother (years) | 15.8 (2.43) | 15.5 (2.58) |
| Educationa father (years) | 15.1 (2.77) | 15.0 (2.97) |
| Birthweight (grams) | 3601 (545) | 3582 (594) |
| n (%) | n (%) | |
| Boys | 667 (49.3) | 2389 (50.0) |
| One or more sibling | 915 (67.4) | 3265 (69.3) |
| Premature | 162 (11.9) | 671 (14.4) |
| Single mother | 50 (3.8) | 356 (7.7) |
| Breast fed ≥6 months | 1053 (76.9) | 3285 (69.3) |
| Smoking mother at start pregnancy | 186 (13.8) | 862 (18.6) |
| Smoking father at start pregnancy | 205 (15.7) | 917 (21.3) |
| Atopyb mother | 652 (47.8) | 1991 (42.4) |
| Atopyb father | 578 (42.3) | 1725 (36.8) |
| Atopy mother and father | 304 (22.3) | 865 (18.4) |
| Dog in dwelling | 104 (7.6) | 365 (7.7) |
| Cat in dwelling | 150 (11.0) | 397 (8.4) |
| Homeowner | 1247 (91.4) | 4118 (87.4) |
a Education data is based on a sample (Intervention cohort: n = 1062. Control cohort: n = 1242).
b Defined as ever having had asthma, allergic rhinoconjunctivitis or AD.
Dotterud et al. BMC Public Health 2013 13:123 doi:10.1186/1471-2458-13-123
