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Table 1: Complications associated with clipping and coiling of unruptured aneurysms
Complications Coiled (Total  Patients = 34,125) Coiled (%) Clipped (Total  Patients = 29,918) Clipped (%) P
Primary outcomes 
    Death 215 0.6 345 1.2 <.0001
    Discharge to long-term facility 1655 4.9 4184 14.0 <.0001
Secondary outcomes 
    Headache 1434 4.2 1058 3.5 <.0001
    Aphasia 372 1.0 800 2.7 <.0001
    Hemiplegia/paresis 582 1.7 1163 3.9 <.0001
    Hydrocephalus 431 1.3 414 1.4 .48
    Ventriculostomy 185 0.5 402 1.3 <.0001
    VP shunt surgery 97 0.2 216 0.7 <.0001
Cerebral artery occlusion 852 2.5 981 3.3 <.0001
Cardiac complications 165 0.5 494 1.7 <.0001
Tracheostomy 148 0.4 359 1.2 <.0001
Endotracheal tube 483 1.4 1010 3.4 <.0001
Postoperative surgical complications 547 1.6 997 3.3 <.0001
Postoperative neurologic complications 775 2.3 2340 7.8 <.0001

Complications	Coiled (Total Patients = 34,125)	Coiled (%)	Clipped (Total Patients = 29,918)	Clipped (%)	P
Primary outcomes
Death	215	0.6	345	1.2	<.0001
Discharge to long-term facility	1655	4.9	4184	14.0	<.0001
Secondary outcomes
Headache	1434	4.2	1058	3.5	<.0001
Aphasia	372	1.0	800	2.7	<.0001
Hemiplegia/paresis	582	1.7	1163	3.9	<.0001
Hydrocephalus	431	1.3	414	1.4	.48
Ventriculostomy	185	0.5	402	1.3	<.0001
VP shunt surgery	97	0.2	216	0.7	<.0001
Cerebral artery occlusion	852	2.5	981	3.3	<.0001
Cardiac complications	165	0.5	494	1.7	<.0001
Tracheostomy	148	0.4	359	1.2	<.0001
Endotracheal tube	483	1.4	1010	3.4	<.0001
Postoperative surgical complications	547	1.6	997	3.3	<.0001
Postoperative neurologic complications	775	2.3	2340	7.8	<.0001