Factors independently associated with confirmed asthma in 5‐yr-old children by logistic regression
| Factor | Subjects n (%) | OR (95% CI) | p‐value |
| More than three episodes of fever last year | 491 (29) | 3.03 (2.11–4.37) | 0.00001 |
| Hay fever | 77 (5) | 2.70 (1.49–4.92) | 0.001 |
| Mother or father with chronic disease | 337 (18) | 2.34 (1.58–3.46) | 0.0001 |
| Any reaction to food | 220 (13) | 2.10 (1.33–3.32) | 0.0001 |
| Psychosocial problems in family | |||
| No problems (reference) | 1466 (92) | 1.00 | |
| Problems, action not needed | 93 (6) | 1.52 (0.77–3.01) | 0.23 |
| Problems, action needed | 28 (2) | 3.33 (1.31–8.49) | 0.01 |
| Rooms in house | |||
| 5–6 (reference) | 683 (38) | 1.00 | |
| <5 | 615 (36) | 1.92 (1.26–2.93) | 0.002 |
| >6 | 430 (26) | 1.36 (0.84–2.20) | 0.22 |
OR: odds ratio
CI: confidence interval. In total, 1587 of 1884 children are included in the regression analysis due to varying response to the different questions