Baseline patient characteristics according to antiplatelet resistance status
| Total (N = 338) | Abnormal ARU (n = 32) | P Valuea | Abnormal PRU (n = 105) | P Valuea | |
|---|---|---|---|---|---|
| Clinical | |||||
| Age (≥65 yr) | 204 (60.4%) | 14 (43.8%) | .061 | 33 (31.4%) | .433 |
| Sex (female) | 225 (66.6%) | 23 (71.9%) | .560 | 83 (79.0%) | .001b |
| Diabetes | 23 (6.8%) | 7 (21.9%) | .003b | 11 (10.5%) | .100 |
| Hypertension | 146 (43.2%) | 16 (50.0%) | .456 | 48 (45.7%) | .554 |
| Hyperlipidemia | 53 (15.7%) | 5 (15.6%) | 1.000 | 12 (11.4%) | .196 |
| Smoking | 59 (17.5%) | 5 (15.6%) | .816 | 20 (19.0%) | .643 |
| TIA or stroke history | 16 (4.7%) | 3 (9.4%) | .381 | 3 (2.9%) | .408 |
| Procedure | |||||
| Dome size of aneurysm ≥7 mm | 75 (22.2%) | 11 (34.4%) | .114 | 28 (26.7%) | .204 |
| Location of aneurysm | |||||
| ICA | 198 (58.6%) | 18 (56.3%) | .636c | 62 (59.0%) | .588c |
| MCA | 80 (23.7%) | 11 (34.4%) | 20 (19.0%) | ||
| ACA | 28 (8.3%) | 1 (3.1%) | 12 (11.4%) | ||
| Posterior circulation | 32 (9.5%) | 2 (6.3%) | 11 (10.5%) | ||
| Technique | |||||
| Assist with stent | 149 (44.1%) | 14 (43.8%) | 1.000 | 45 (42.9%) | .813 |
| Double catheter | 116 (34.3%) | 14 (43.8%) | .246 | 42 (40.0%) | .173 |
| Incomplete occlusion | 48 (14.2%) | 4 (12.5%) | .804 | 18 (17.1%) | .315 |
| Thrombus formation | 5 (1.5%) | 2 (6.3%) | .073 | 2 (1.9%) | 1.000 |
| Mean No. of angiograms ± SD | 6.87 ± 2.34 | 6.53 ± 1.93 | .386 | 7.17 ± 2.36 | .115 |
Note:—ACA indicates anterior cerebral artery.
↵a P value was obtained by comparing patients with normal response with a χ2, Fischer exact, or Student t test for each variable.
↵b Significant.
↵c These values were obtained by comparing ICA versus MCA, ACA, or posterior circulation with linear-by-linear association.