Table 2.

Event rates for fistulas, arm grafts, and thigh grafts

Parameter	Fistulas	Arm Grafts	Thigh Grafts	P
No. of accesses	19	101	100
Thrombosis ratea	0.237	1.457	0.543	<0.01
Angiogram rate	0.693	0.521	0.338	<0.01
Total angioplasty rate	0.930	1.977	0.881	<0.01
Revision rate	0.099	0.264	0.157	0.45
Infection rate	0.020	0.521	0.100	0.47

^aEvent rates are n/patient-year.