Table 1 Characteristics of the two study populations with exposure reported at 6 weeks and 1 year.
Exposure reported at 6 weeks, N = 2657 | Exposure reported at 1 year, N = 3087 | ||||||
|---|---|---|---|---|---|---|---|
Reported exposure a | n | % | (95% CI) | n | % | 95% CI | |
Gender | Male | 1333 | 50.2 | (48.3-52.1) | 1529 | 49.5 | (47.8-51.3) |
Homeowner | Yes | 2242 | 84.4 | (82.9-85.7) | 2680 | 86.8 | (85.6-88.0) |
Cat | Yes | 239 | 9.0 | (7.9-10.1) | 266 | 8.6 | (7.7-9.7) |
Dog | Yes | 247 | 9.3 | (8.2-10.5) | 249 | 8.1 | (7.1-9.1) |
Bird | Yes | 63 | 2.4 | (1.8-3.0) | 70 | 2.3 | (1.8-2.9) |
Dampness | Yes | 105 | 4.0 | (3.2-4.8) | 117 | 3.8 | (3.1-4.5) |
Maternal current smoking | Yes | 189 | 7.1 | (6.2-8.2) | 453 | 14.7 | (13.4-16.0) |
Paternal current smoking | Yes | 399 | 15.0 | (13.7-16.4) | 499 | 16.2 | (14.9-17.5) |
Premature birth, < 37 weeks | Yes | 75 | 2.8 | (2.2-3.5) | 75 | 2.4 | (1.9-3.0) |
Birth-weight | <2500gr | 74 | 2.8 | (2.2-3.5) | 105 | 3.4 | (2.8-4.1) |
2500-3999gr | 1937 | 72.9 | (71.2-74.6) | 2196 | 71.1 | (69.5-72.7) | |
≥4000gr | 623 | 23.4 | (21.8-25.1) | 691 | 22.4 | (20.9-23.9) | |
Breastfeeding now | Yes | 2481 | 93.4 | (92.4-94.3) | 1114 | 36.1 | (34.4-37.8) |
Number of siblings | 0 | 1172 | 44.1 | (42.2-46.0) | 1343 | 43.5 | (41.7-45.3) |
1 | 920 | 34.6 | (32.8-36.5) | 1033 | 33.5 | (31.8-35.2) | |
2 or more | 533 | 20.1 | (18.6-21.6) | 711 | 23.0 | (21.6-24.6) | |
Any kind of infection, child | Yes | 903 | 34.0 | (32.2-35.8) | 2983 | 96.6 | (95.9-97.2) |
Antibiotics ever, child | Yes | 58 | 2.2 | (1.7-2.8) | 706 | 22.9 | (21.4-24.4) |
mean | range | SD | mean | range | SD | ||
Maternal age | 30.1 | 17-48 | 4.49 | 29.98 | 17-48 | 4.46 | |