Figure 3From: Asthma and COPD in cystic fibrosis intron-8 5T carriers. A population-based studyOdds ratios for spirometry defined COPD by intron-8 polythymidine tract and F508del genotype. 7T homozygotes without F508del was used as reference group. The adjusted model included gender, age at study entry, and packyears at study entry. Error bars are 95% confidence intervals. COPD = FEV1<80% predicted and FEV1/FVC<0.7, excluding self-reported asthma.Back to article page