(A) Age by etiology * p<0.05; ** p<0.001. CD: ciliary dyskinesia; COPD: chronic obstructive pulmonary disease; PID: primary immunodeficiencies. Results expressed as percentages. (B) Sex by etiology * p<0.01; ** p<0.001. CD: ciliary dyskinesia; COPD: chronic obstructive pulmonary disease; PID: primary immunodeficiencies. Results expressed as percentages.