Statistical analysis
Data are reported as mean and standard deviations (SD). Pearson’s correlation analysis was used to determine correlations between LCI and FEV1, Brody scores, BMI and Z-6MWD, as calculated by the Minitab version 19.0.
Associations between LCI and CFTR mutations, pancreatic status, chronic PA infection, and the number of major and minor PEx were evaluated by assessing the differences between LCI means using paired T-tests. P <0.05 was considered statistically significant.