Table 4

Risk factors associated with post-treatment mRS≥3*

Variable	Univariate			Multivariate
Variable	RR	95% CI	P value	OR	95% CI	P value
Age≥56	2.335	1.275 to 4.277	0.003	2.038	1.039 to 3.998	0.038
Presentation: subarachnoid haemorrhage	0.176	0.082 to 0.376	<0.001
Presentation: venous hypertensive myelopathy	6.171	2.887 to 13.193	<0.001	4.102	2.108 to 7.982	<0.001
Steroid administration	2.806	1.682 to 4.682	<0.001
Pretreatment mRS≥3	4.971	2.601 to 9.501	<0.001	3.127	1.617 to 6.047	<0.001
Dural arteriovenous fistula	1.889	0.964 to 3.701	0.051
Fistula location: C-2	0.393	0.149 to 1.036	0.037
Arterial feeder: anterior spinal artery	0.389	0.128 to 1.181	0.064
Drain: ascending intradural drainage	0.330	0.177 to 0.617	<0.001
Drain: descending intradural drainage	3.572	1.747 to 7.304	<0.001
Aneurysmal structure	0.447	0.211 to 0.947	0.024
Varix	1.763	0.901 to 3.449	0.083