| Normal ciliated edge | Ciliated edge with minor projections | Ciliated edge with major projections | Epithelial strip with an isolated ciliated cell | Single ciliated cell | |
| CBF in Hz | 13.4 (11.6–4.2) | 11.4 (8.9–13.9)* | 8.7 (7.3–11.3)* | 9.2 (7.2–10.3)* | 6.5 (2.2–8.3)* |
| Dyskinesia score | 0 (0–1) | 1 (0–2)* | 2 (1–3)* | 2 (1.8–3)* | 4 (3–4)* |
Data expressed as median (interquartile range). *p<0.05 compared with corresponding values for normal ciliated edge. CBF, ciliary beat frequency.