. Author manuscript; available in PMC: 2020 Mar 1.

Published in final edited form as: Neuroradiology. 2018 Nov 19;61(3):275–284. doi: 10.1007/s00234-018-2135-9

Tab 5.

Results of comparison of rupture rates for subgroups of bifurcation versus sidewall aneurysms by location. ChiSq refers to a comparison of rupture rates by a Chi-squares test, Fis to a comparison using Fisher’s exact test.

	Rupture Rate Sidewall	Rupture Rate Bifurcation	P-val	Method	Sign.	Sample Size (Sidewall/Bi-furcation)
ACA-ACOM	0.19	0.39	0.24	ChiSq		75 (26/49)
ICA-ACHOR	0.11	0.15	1	Fis		49 (9/40)
ICA-OPH	0.09	0.04	0.10	ChiSq		301 (171/13 0)
MCA	0	0.27	0.02	Fis	*	348 (16/332)
PCOM	0.37	0.54	0.006	ChiSq	*	293 (98/195)