Table 4:

Complications by aneurysm size

Complications	Small (n = 386) (N = 473)		Large (n = 339) (N = 357)		Giant (n = 62) (N = 66)		Total (n = 793)^{^a,^b} (N = 906)	P Value
Complications	Anterior (n = 372)	Posterior (n = 14)	Anterior (n = 309)	Posterior (n = 30)	Anterior (n = 52)	Posterior (n = 10)	Total (n = 793)^{^a,^b} (N = 906)	P Value
Mean aneurysm size (mm)	5.1 ± 2.2	6.0 ± 2.6	14.8 ± 4.0	15.0 ± 4.3	28.8 ± 5.3	29.1 ± 7.2	10.7 ± 7.7	<.001
Spontaneous rupture	0 (0%)	0 (0%)	2 (0.5%)	0 (0%)	3 (5.8%)	0 (0%)	5 (0.6%)	<.01
Intraparenchymal hemorrhage	7 (1.9%)	0 (0%)	8 (2.6%)	0 (0%)	3 (5.8%)	1 (10.0%)	19 (2.4%)	.24
Ischemic stroke	10 (2.7%)	1 (7.1%)	16 (5.2%)	1 (3.3%)	7 (13.5%)	2 (20.0%)	37 (4.7%)	<.01
Parent artery stenosis	1 (0.3%)	0 (0%)	1 (0.3%)	0 (0%)	0 (0%)	0 (0%)	2 (0.3%)	1.0
Cranial neuropathy	0 (0%)	0 (0%)	2 (0.6%)	0 (0%)	0 (0%)	0 (0%)	2 (0.3%)	.41
Neurologic morbidity	18 (4.8%)	1 (7.1%)	24 (7.8%)	1 (3.3%)	12 (23.1%)	3 (30.0%)	59 (7.4%)	<.01
Neurologic mortality	6 (1.6%)	1 (7.1%)	15 (4.9%)	2 (6.7%)	3 (5.8%)	3 (30.0%)	30 (3.8%)	<.01
Neurologic morbidity and mortality^{^a} (all patients)	19 (5.1%)	2 (14.3%)	27 (8.7%)	3 (10.0%)	12 (23.1%)	4 (40.0%)	67 (8.4%)	<.01
Neurologic morbidity and mortality (patients with unruptured aneurysms)	11/321 (3.4%)	1/12 (8.3%)	23/291 (7.9%)	3/29 (10.3%)	12/51 (23.5%)	3/9 (33.3%)	53/717 (7.4%)	<.01
Neurologic morbidity and mortality (patients with ruptured aneurysms)	8/51 (15.7%)	1/2 (50.0%)	4/18 (22.2%)	0/1 (0%)	0/1 (0%)	1/1 (100%)	14/76 (18.4%)	.23
Neurologic morbidity and mortality (excluding ruptured, dissecting, or fusiform aneurysms)	11/294 (3.7%)	0/7 (0%)	12/217 (5.5%)	2/13 (15.4%)	7/37 (18.9%)	1/5 (20.0%)	33/574 (5.7%)	<.01

Note:—n indicates the number of patients; N, number of aneurysms.
↵a Six patients did not have aneurysm size reported.
↵b Numbers do not sum across categories because some patients experienced >1 event.