Association between current asthma in children aged 6 yrs and respiratory infection in the first year of life
| Current asthma# | ||
| Unadjusted | Adjusted¶ | |
| Upper respiratory tract infections | ||
| 0 | 1.00 | 1.00 |
| 1 | 0.78 (0.61–1.00) | 0.99 (0.73–1.34) |
| 2–3 | 0.73 (0.56–0.97) | 0.75 (0.54–1.04) |
| ≥4 | 1.57 (1.10–2.25) | 1.32 (0.92–1.89) |
| p-value+ | 0.006 | 0.057 |
| Wheezing lower respiratory tract illness | ||
| 0 | 1.00 | 1.00 |
| 1 | 1.61 (1.15–2.24) | 1.44 (1.02–2.04) |
| ≥2 | 3.35 (2.46–4.56) | 3.84 (2.82–5.24) |
| p-value+ | <0.0005 | <0.0005 |
| Nonwheezing lower respiratory tract illness | ||
| 0 | 1.00 | 1.00 |
| 1 | 1.61 (1.17–2.23) | 1.46 (1.04–2.07) |
| ≥2 | 1.30 (0.71–2.38) | 1.07 (0.56–2.04) |
| p-value+ | 0.012 | 0.093 |
Data are presented as odds ratio (95% confidence interval)
#: data from 387 of 2,155 subjects
+: p-value for heterogeneity of odds ratio
¶: adjusted for all types of infections as well as sex, gestational age <37 weeks and maternal smoking at any stage of pregnancy