Table 1

Characteristics of the study cohort

Surgical clippingEndovascular coiling
No of patients85239737
Age (years) (mean±SD)53.10 (±12.98)55.29 (±14.45)
Women (%)68.9067.67
White43174014
Black1215921
Hispanic1122798
Asian291264
Native America3422
Other342226
Unspecified24162278
Insurance
 Medicare19152242
 Medicaid15131152
 Private46053855
 Self-pay1116778
 No charge103111
 Other468358
Geography
 NE15731513
 Midwest19931787
 South38363267
 West23351956
 Rural15280
 Urban academic1378906
 Urban private80887463
Hospital size
 Small298285
 Medium1443977
 Large78777187