Etiology of C.R.F Number of patients Percentage Age intervals of the patients ( years)
<1 1-5 >5
*Primary hyperoxaluria 6 66.7% 2 2 2
*Congenital anomalies 3 33.3% 1 _ 2
Table 2: The etiology and age intervals of the nine CRF patients less than 15 years old in Jenin District.