a clear trendp = 0.03
The multivariate analysis showed that all the lung function measurements analyzed, except FVC, were risk factors for wheezing in the past year ( Figure 2 ), but suffering from BPD, although it showed a clear trend, was no longer a risk factor for wheezing in the past year (OR 2.46 (95% CI 1.07–5.63), p = 0.03 for the model that included FVC, but OR 3.16 (95% CI 0.89; 11.18) p = 0.074 in the model that included FEV05/FVC).