| Hazard ratio | 95% CI | P value |
---|---|---|---|
Age, y | 1.008 | 0.970—1.047 | 0.7005 |
Sex | |||
 Male | 1.595 | 0.598—4.254 | 0.3509 |
 Female | Reference | - |  |
Vascular risk factors | |||
 Hypertension | 1.818 | 0.508—6.507 | 0.3580 |
 Dyslipidemia | 0.899 | 0.439—1.841 | 0.7706 |
 Diabetes mellitus | 2.084 | 1.039—4.180 | 0.0386 |
 Coronary artery disease | 1.682 | 0.760—3.720 | 0.1996 |
 Chronic kidney disease | 0.719 | 0.200—2.583 | 0.6126 |
Vascular risk factors | Â | Â | 0.2424 |
 Middle cerebral artery | 1.267 | 0.235—6.838 |  |
 Internal cerebral artery | 1.511 | 0.276—8.268 |  |
 Vertebral artery | 0.444 | 0.061—3.234 |  |
 Basilar artery | Reference | - |  |
Duration from last attack to procedure | 0.993 | 0.982—1.004 | 0.2158 |
Stenosis rate: pretreatment | 0.996 | 0.953—1.041 | 0.8656 |
Stenosis rate: posttreatment | 1.009 | 0.979—1.041 | 0.5605 |
Length of lesion | 1.358 | 1.174—1.571 |  < 0.0001 |
Morphology of lesion | |||
 Eccentric | 1.571 | 0.782—3.155 | 0.2043 |
 Concentric | Reference | - |  |
Max diameter of balloon/stent | 0.661 | 0.339—1.287 | 0.2232 |
Primary procedures | |||
 Balloon angioplasty | 4.194 | 1.083—16.239 | 0.0379 |
 Stenting | Reference | - |  |
Recurrence of ischemic events | Â | Â | 0.4396 |
 TIA | 2.733 | 0.579—12.903 |  |
 Ischemic stroke | 1.130 | 0.292—4.375 |  |