| Healthy subjects | Referrals for PCD work-up | PCD patients | CF patients | All subjects | |
| Subjects n | 57 | 117 | 59 | 49 | 282 |
| Males | 19 (33.3) | 52 (44.4) | 37 (62.7) | 25 (51.0) | 134 (47.5) |
| Age at inclusion yrs | 29.5 (3.1–63.6) | 6.9 (0.0–62.4) | 17.4 (3.6–65.8) | 16.4 (0.1–50.7) | 12.3 (0.0–65.8) |
| Age <16 yrs | 20 (35.1) | 95 (81.2) | 26 (44.1) | 24 (49.0) | 165 (58.5) |
Data are presented as n (%) or median (range), unless otherwise stated. PCD: primary ciliary dyskinesia; CF: cystic fibrosis.