Table 1.

COHEN-patients.

	Open	Vesicoscopic	p-Value
Patients	39	151
Mean age (years, SD)	2.4 (2.2)	4.3 (3.3)	< 0.001 *
Female/Male	20/19	113/38	0.017 **
Ureters per operation	1.8	1.7	0.071 *
Operation unilateral	9	61	0.136 **
Operation bilateral	30	90	0.136 **
Double ureters reimplanted	3	16	0.865 **
Mean grade of reflux ***	4.2	3.9	0.088 *

* Mann–Whitney U-test, ** Chi²-test, *** Counting the highest implanted grade.