Characteristics of 36 subjects with CF
| Females, number (%) | 21 (58%) |
| CF genotype | |
| Homozygous ΔF508 | 16 (44%) |
| Heterozygous ΔF508 | 20 (56%) |
| Method of diagnosis | |
| Newborn screening | 29 (81%) |
| Meconium ileus | 4 (11%) |
| Other gastrointestinal symptoms | 2 (6%) |
| Respiratory symptoms | 1 (3%) |
| History of maternal smoking during pregnancy | 7 (19%) |
| Postnatal exposure to tobacco smoke in the home | 12 (33%) |
| Family history of asthma (at least one parent) | 11 (31%) |