Demographics | All treated (n=19 482) | SC (n=7475) | ET (n=12 007) | OR (95% CI)* |
Age (median (IQR) | 57 (48–66) | 55 (47–64) | 58 (49–68) | 1.02 (1.01 to 1.02) |
Female | 13 855 (72%) | 5251 (71%) | 8604 (73%) | 1.08 (1.01 to 1.15) |
Ethnicity | ||||
White | 10 786 (58%) | 4016 (57%) | 6770 (59%) | Reference |
Black | 2210 (12%) | 838 (12%) | 1372 (12%) | 0.97 (0.88 to 1.07) |
Hispanic | 3843 (21%) | 1588 (22%) | 2255 (20%) | 0.84 (0.78 to 0.91) |
Asian or Pacific Islander | 1100 (6%) | 445 (6%) | 665 (6%) | 0.87 (0.77 to 0.99) |
Other | 545 (3%) | 219 (3%) | 326 (3%) | 0.88 (0.74 to 1.05) |
Comorbidities | ||||
Dyslipidemia | 3538 (18%) | 1107 (15%) | 2431 (20%) | 1.46 (1.35 to 1.58) |
Smoking | 6469 (33%) | 2606 (35%) | 3863 (32%) | 0.87 (0.83 to 0.94) |
Diabetes | 2586 (13%) | 969 (13%) | 1617 (13%) | 1.04 (0.96 to 1.14) |
Hypertension | 12 326 (63%) | 4668 (62%) | 7658 (64%) | 1.06 (1.0 to 1.12) |
Renal failure | 535 (3%) | 173 (2%) | 362 (3%) | 1.31 (1.09 to 1.58) |
Charlson Index (median (IQR) | 2 (1–3) | 2 (1–3) | 2 (1–3) | 1.0 (0.99 to 1.02) |
Ruptured vs unruptured | ||||
Unruptured aneurysm | 9279 (49%) | 3300 (44%) | 5979 (50%) | Reference |
Ruptured aneurysm | 10203 (51%) | 4175 (56%) | 6028 (50%) | 0.80 (0.75 to 0.84) |
State | ||||
California | 9656 (50%) | 4350 (58%) | 5306 (44%) | Reference |
Florida | 9826 (50%) | 3125 (42%) | 6701 (56%) | 1.76 (1.66 to 1.86) |
Year | ||||
2005 | 2169 (11%) | 1124 (15%) | 1045 (9%) | Reference |
2006 | 2221 (11%) | 1118 (15%) | 1103 (9%) | 1.06 (0.94 to 1.20) |
2007 | 2261 (12%) | 1041 (14%) | 1220 (10%) | 1.26 (1.12 to 1.42) |
2008 | 2286 (12%) | 970 (13%) | 1316 (11%) | 1.46 (1.30 to 1.64) |
2009 | 2423 (12%) | 922 (12%) | 1501 (13%) | 1.75 (1.56 to 2.0) |
2010 | 2493 (13%) | 864 (12%) | 1629 (14%) | 2.03 (1.80 to 2.28) |
2011 | 2507 (13%) | 793 (11%) | 1714 (14%) | 2.32 (2.06 to 2.62) |
2012† | 1028 (5%) | 219 (3%) | 809 (7%) | 3.97 (3.34 to 4.72) |
2013† | 1055 (5%) | 215 (3%) | 840 (7%) | 4.20 (3.54 to 4.99) |
2014† | 1039 (5%) | 209 (3%) | 830 (7%) | 4.27 (3.59 to 5.08) |
*Univariate OR for likelihood of undergoing ET as the index treatment relative to SC.
†Data available only for Florida.
ET, endovascular treatment; SC, surgical clipping. Data are presented as n(%) or median (interquartile range) unless otherwise specified.