. Author manuscript; available in PMC: 2022 Jun 11.

Published in final edited form as: J Neurosurg. 2020 Dec 11;135(3):742–750. doi: 10.3171/2020.7.JNS201731

TABLE 2.

Comparison of outcomes between the unmatched OE+SRS versus SRS-only cohorts

Outcome	OE+SRS Cohort, n = 68	SRS-Only Cohort, n = 1110	OR (95% CI)	p Value
Primary outcome
AVM obliteration (%)	26/66 (39.4)	698/1090 (64.0)	0.365 (0.219–0.607)	<0.001
Secondary outcomes (%)
Post-SRS hemorrhage	5/61 (8.2)	65/1091 (6.0)	1.409 (0.546–3.639)	0.478
All-cause mortality	1/66 (1.5)	31/1108 (2.8)	0.534 (0.072–3.977)	0.541
Radiological RICs	20/63 (31.8)	373/1068 (34.9)	0.867 (0.502–1.495)	0.607
Symptomatic RICs	13/63 (20.6)	141/1071 (13.2)	1.715 (0.908–3.237)	0.096
Cyst formation	2/63 (3.2)	13/1079 (1.2)	2.689 (0.593–12.181)	0.200
Asymptomatic embolization-related complications	16/68 (23.5)	—	—	—
Symptomatic embolization-related complications	5/68 (7.4)	—	—	—

Boldface type indicates statistical significance.