Table 4.

Circuit outcomes

	Filter Life Group				Total
	≤24 h	25–48 h	49–96 h	>96 h
No. of fitters	227	145	104	95	571
Filter change reason not recorded	98 (43.2%)	68 (46.9%)	49 (47.1%)	0	215
Filter change reason recorded	129 (56.8%)	77 (53.1%)	55 (52.9%)	95 (100%)	356
Unrelated to therapy	76 (58.9%)	46 (60%)	35 (64%)	24 (25%)	181 (50.8%)
Time	0	0	0	58 (61%)	58 (16.3%)
Access	11 (8.5%)	4 (5%)	1 (2%)	3 (3%)	19 (5.3%)
Clotting	33 (25.6%)	19 (25%)	14 (25%)	5 (5%)	71 (19.9%)
Low efficacy	9 (7%)	8 (10%)	5 (9%)	5 (5%)	27 (7.6%)