The distribution of scores (≤5, 6–9 and ≥10) in primary ciliary dyskinesia (PCD) positive and PCD-negative participants using PICADAR in the derivation group (n=288) and in the validation group (n=157) (only children <18 years included)
| Derivation group | Validation group | |||
| PCD-positive | PCD-negative | PCD-positive | PCD-negative | |
| Subjects | 50 | 238 | 79 | 78 |
| ≤5 | 3 (6.0) | 189 (79.4) | 15 (18.7) | 59 (75.6) |
| 6–9 | 29 (58.0) | 48 (20.2) | 42 (53.3) | 16 (20.5) |
| ≥10 | 18 (36.0) | 1 (0.4) | 22 (28.0) | 3 (3.8) |
Data are presented as n or n (%).