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Table 4: Comparison of angles and diameters between ruptured and unruptured MCA aneurysms
Variables Ruptured Aneurysm^{^a}n = 22 Unruptured Aneurysm^{^a}n =23 P Value
Parent-daughter angles ϕ_A (°) 84.08 ± 20.77 79.53 ± 19.74 .423
ϕ_NA (°) 120.22 ± 21.17 117.85 ± 21.76 .691
ϕ_C1 (°) 115.35 ± 22.45 117.15 ± 23.52 .777
ϕ_C2 (°) 117.53 ± 18.56 113.78 ± 16.43 .449
Daughter-daughter angles γ_A (°) 137.01 ± 24.69 143.97 ± 17.99 .265
γ_C (°) 117.67 ± 19.04 114.67 ± 26.87 .634
Aneurysmal side RDs RD_A (mm) 0.80 ± 0.17 0.73 ± 0.22 .244
RD_NA (mm) 0.90 ± 0.22 0.84 ± 0.14 .234
Nonaneurysmal side RDs RD_C1 (mm) 0.75 ± 0.14 0.72 ± 0.20 .549
RD_C2 (mm) 0.78 ± 0.14 0.82 ± 0.20 .469
↵a Values are presented as means.

Variables		Ruptured Aneurysm^{^a}n = 22	Unruptured Aneurysm^{^a}n =23	P Value
Parent-daughter angles	ϕ_A (°)	84.08 ± 20.77	79.53 ± 19.74	.423
	ϕ_NA (°)	120.22 ± 21.17	117.85 ± 21.76	.691
	ϕ_C1 (°)	115.35 ± 22.45	117.15 ± 23.52	.777
	ϕ_C2 (°)	117.53 ± 18.56	113.78 ± 16.43	.449
Daughter-daughter angles	γ_A (°)	137.01 ± 24.69	143.97 ± 17.99	.265
Daughter-daughter angles	γ_C (°)	117.67 ± 19.04	114.67 ± 26.87	.634
Aneurysmal side RDs	RD_A (mm)	0.80 ± 0.17	0.73 ± 0.22	.244
Aneurysmal side RDs	RD_NA (mm)	0.90 ± 0.22	0.84 ± 0.14	.234
Nonaneurysmal side RDs	RD_C1 (mm)	0.75 ± 0.14	0.72 ± 0.20	.549
Nonaneurysmal side RDs	RD_C2 (mm)	0.78 ± 0.14	0.82 ± 0.20	.469