Should Endovascular Repair Be Reimbursed for Low Risk Abdominal Aortic Aneurysm Patients? Evidence from Ontario, Canada

Table 3

One-year resource utilization and cost.

Variable	EVAR	OSR,   High risk	OSR,  Low risk	Difference EVAR versus OSR High risk	Difference  EVAR versus OSR Low risk	Difference OSR High—versus Low risk
No. of patients	140	52	143
Initial hospitalization
Duration of stay in hospital, day (mean, SD)	7.7 (5.8)	16.1 (16.0)	9.4 (5.2)	−8.43	−1.66	6.77
Frequency of attendance in ICU, %	5 (3.6)	16 (30.8)	9 (6.3)	−27.20	−2.70	24.5
Mean duration of stay in ICU (SD)	0.23 (1.71)	3.21 (8.25)	0.27 (1.4)	−2.98	−0.04	2.94
Subtotal costs	$28,139	$31,181	$15,494	−$3,042	$12,645*	−$15,687*
Followup, mean number of:
Hospital admissions	0.36	0.13	0.20	0.23	0.16	−0.07
ER Visits	0.93	0.31	0.51	0.62	0.42	−0.20
GP Visits	6.37	5.48	5.84	0.89	0.54	−0.35
Specialist visits	4.19	1.65	1.65	2.54	1.85	−0.69
Vascular surgeon visits	2.74	0.96	0.96	1.78	1.47	−0.31
CT scans	2.61	0.10	0.10	2.51	2.55	−0.04
Subtotal costs	$5,172	$2,171	$1,890	$3,010*	$3,282*	$272
Followup, productivity
Mean paid days taken off work	3.91	3.23	8.90	0.68	−4.99	−5.67
Mean hours of care provided by others	18.6	23.0	35.07	−4.40	−16.47	−12.07
Subtotal costs	$835	$818	$1,779	$17	−$944	−$961
Total costs	34,146	$34,170	$19,163	−$24	$14,983*	−$15,007*

*: Indicate significance at 5% level.