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Table 2: Unadjusted neuroimaging use for stroke/TIA work-up by sex, age, and race for combined study periods of 2005 and 2010^{^a}
Sex Age (yr) Race
Men (n = 2996) Women (n = 3906) P Value 55 or Younger (n = 1343) Older Than 55 (n = 5559) P Value Black (n = 1355) White (n = 5505) P Value
NCCT 2778 (93%) 3649 (93%) .26 1265 (94%) 5162 (93%) .08 1296 (96%) 5091 (92%) <.01
MRI 1633 (55%) 1983 (51%) <.01 851 (63%) 2765 (50%) <.01 801 (59%) 2788 (51%) <.01
CTA 163 (5%) 184 (5%) .17 130 (10%) 217 (4%) <.01 81 (6%) 263 (5%) .07
MRA 1075 (36%) 1206 (31%) <.01 569 (42%) 1712 (31%) <.01 561 (41%) 1703 (31%) <.01
Any advanced imaging 1718 (57%) 2104 (54%) <.01 916 (68%) 2906 (52%) <.01 847 (63%) 2948 (54%) <.01
Carotid sonography 1246 (42%) 1614 (41%) .82 482 (36%) 2378 (43%) <.01 417 (31%) 2425 (44%) <.01
↵a Data are No. (%) unless otherwise indicated.