Multivariate test of possible risk factors for wheezing and allergic sensitisation at 1 yr of age using logistic regression in 42 children with respiratory syncytial virus (RSV) bronchiolitis and 84 controls#
| Risk factor | Wheezing | Recurrent wheezing | Sensitisation | ||||||
| p-value | OR | 95% CI | p-value | OR | 95% CI | p-value | OR | 95% CI | |
| RSV bronchiolitis | <0.0001 | 10.32 | 3.56–29.96 | 0.01 | 8.92 | 1.42–55.88 | <0.001 | 20.66 | 3.53–120.75 |
| Smoking | |||||||||
| By father | 0.85 | 1.12 | 0.36–3.46 | ||||||
| By mother | 0.01 | 8.42 | 1.51–46.81 | 0.68 | 0.68 | 0.11–4.12 | 0.04 | 9.17 | 1.17–72.21 |
| During pregnancy | 0.41 | 0.50 | 0.10–2.60 | 0.02 | 6.45 | 1.52–27.23 | 0.79 | 1.31 | 0.19–9.10 |
| Double heredity atopy | 0.59 | 1.31 | 0.25–11.58 | ||||||
| Male sex | <0.01 | 4.24 | 1.49–12.05 | <0.01 | 12.2 | 2.37–62.5 | |||
| More than one sibling | 0.19 | 2.25 | 0.68–7.46 | 0.29 | 2.14 | 0.52–8.81 | |||
OR: odds ratio
CI: confidence interval
#: risk factors with a p-value <0.10 in Fisher’s exact test (from table 3⇑) were entered