Table 2.

Demographic data of CF patients.

Variables	N (%)
Age
Range	2 month–16 years
Mean ± SD	3.91 ± 4.18 years
Gender
Male	22 (61.1%)
Female	14 (38.9%)
Male:female ratio	1.6:1
Positive family history of CF	6 (16.7%)
Positive consanguinity	18 (50%)
Residence
Greater Cairo	22 (61.1%)
Delta	10 (27.8%)
Upper Egypt	4 (11.1%)