Effects on within- and between-session repeatability in health
| Within-session CoV | Between-session difference | Between-session 95% LoA | Between-session ICC | |
| Uncorrected | ||||
| FRC (L) | 3.3±2.9% | −0.03±0.52 | −1.04–0.98 | 0.931 |
| LCI (TO) | 2.5±2.4% | 0.06±0.47 | −0.86–0.98 | 0.812 |
| Scond (L−1) | – | −0.001±0.011 | −0.017–0.015 | 0.836 |
| Sacin (L−1) | – | −0.003±0.018 | −0.037–0.031 | 0.835 |
| Corrected | ||||
| FRC (L) | 3.0±1.9% | −0.02±0.47 | −0.94–0.91 | 0.927 |
| LCI (TO) | 2.4±1.7% | 0.13±0.34 | −0.53–0.79 | 0.849 |
| Scond (L−1) | – | −0.003±0.009 | −0.021–0.015 | 0.867 |
| Sacin (L−1) | – | −0.002±0.02 | −0.039–0.034 | 0.828 |
Data are presented as mean±sd unless otherwise stated. Mean differences are visit 2 minus visit 1. 95% LoA: 95% limits of agreement; CoV: coefficient of variation; FRC: functional residual capacity; ICC: intra-class correlation coefficient; LCI: lung clearance index; Sacin: distal/intra-acinar airways ventilation heterogeneity; Scond: conducting airways ventilation heterogeneity; TO: lung turnover.