| Cases(n = 24) | Controls(n = 42) | |
| Male (%) | 12 (50) | 22 (51) |
| Median (range) age | 9.7 (4 months–32 years) | 9.3 (10 months–32 years) |
| Homozygous for delta F508 (%) | 13 (54%) | 25 (58%) |
| Median (range) BMI (kg/m2) | 16.2 (13.0–24.6) | 16.6 (14.0–33.5) |
| Number of CF centres | 20 | 16 |
BMI, body mass index; CF, cystic fibrosis.