Table 2:

Multivariate logistic regression analysis and stepwise selection of risk factors for CIE

Parameter	OR (95% CI)	P Value
Variables with P < .05 or previously reported as risk factors for CIE
Intradural placement of catheter for angiography	50.2 (7.25–347)	<.001^{^a}
Previously treated aneurysm	7.46 (1.47–37.9)	.015^{^a}
Prior stroke	4.30 (0.756–24.5)	.1
Hemodialysis	7.91 (0.504–124)	.14
Hypertension	0.985 (0.233–4.17)	.98
Diabetes mellitus	1.64 (0.241–11.1)	.62
Posterior circulation aneurysm	7.52 × 10⁻¹⁰ (0–Inf)	.995
Total contrast medium volume (mL)	0.997 (0.988–1.01)	.58
Nonionic contrast medium	7.85 × 10⁷ (0–Inf)	.99
Endovascular technique (flow diversion)	7.15 (0.642–79.7)	.11
After the stepwise selection using the P value (until P < .05)
Intradural placement of catheter for angiography	40.4 (8.63–189)	<.001^{^a}
Previously treated aneurysm	8.20 (2.26–29.6)	.001^{^a}