Table 3

Effect of incidence of pulmonary exacerbations and viral respiratory infections on rate of decline in FEV1 over 12 months using a multiple linear regression model

 Univariable analysisMultivariable analysis
ΔFEV1 (%)95% CIp ValueΔFEV1 (%)95% CIp Value
PEx per year−1.65−3.1 to −0.230.024−1.79−3.4 to −0.230.025
Virus-positive visits per year−0.88−2.7 to +0.950.268−0.49−2.3 to +1.40.600
Age–-−0.024−0.3 to +0.30.876
Sex*+3.4−1.9 to +8.70.210
  • *Reference category=female.

  • PEx, pulmonary exacerbation; FEV1, forced expiratory volume in 1 s.