. 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 4.

Standardized difference of baseline characteristics between OE+SRS versus SRS-only cohorts before and after propensity score matching

Characteristic	Mean, Before Adjustment		Standardized Difference, Before Adjustment	Mean, After Adjustment		Standardized Difference, After Adjustment
Characteristic	OE+SRS Cohort	SRS-Only Cohort	Standardized Difference, Before Adjustment	OE+SRS Cohort	SRS-Only Cohort	Standardized Difference, After Adjustment
Age	42.21	36.36	0.346	42.18	35.35	0.404
Sex	0.40	0.51	−0.223	0.41	0.46	−0.101
Prior AVM surgery	0.13	0.15	−0.052	0.14	0.19	−0.150
Prior AVM fractionated radiation therapy	0.02	0.00	0.136	0.02	0.00	0.209
Prior AVM hemorrhage	0.63	0.50	0.279	0.66	0.49	0.350
Deep AVM location	0.12	0.25	−0.344	0.14	0.24	−0.281
Eloquent AVM location	0.58	0.61	−0.073	0.59	0.59	−0.007
Deep venous drainage	0.50	0.48	0.041	0.52	0.59	−0.143
AVM volume	16.43	3.94	0.944	10.88	9.12	0.133
SRS margin dose	19.24	21.03	−0.572	19.35	19.35	0.000

Boldface type indicates standardized difference ≥ 0.20.