Table 2. Comparing the frequency of time and type of PICs patency in the two groups .

Groups	N	Time (h)								P value
Continuous flushing (CF)											0.22€
		12	24	36	48	60	72	84	96
Open	36	36(100)	36(100)	36(100)	32(88.9)	32(88.9)	28(77.78)	28(77.78)	12(33.33)
Partial open		0 (0)	0 (0)	0 (0)	1 (2.8)	1 (2.8)	4(11.11)	4(11.11)	20(55.56)
Occlusion		0 (0)	0 (0)	0 (0)	3 (8.3)	3 (8.3)	4(11.11)	4(11.11)	4(11.11)
Pulsatile flushing (PF)
Open	35	35(100)	35(100)	35(100)	31(88.58)	31(88.58)	29(82.87)	29(82.87)	19 (54.28)
Partial open		0 (0)	0 (0)	0 (0)	3 (8.57)	3 (8.57)	5 (14.28)	5 (14.28)	13 (37.15)
Occlusion		0 (0)	0 (0)	0 (0)	1 (2.85)	1 (2.85)	1 (2.85)	1 (2.85)	3 (8.57)

^€Fisher’s exact test