Mean value of outcome parameters reported in eligible studies
| Outcome parameters | Drug eluting stents | Bare metal stents |
|---|---|---|
| Technical success | 98.78% (162/164) | 100% (157/157) |
| Clinical success | 95.77% (136/142) | 97.96% (144/147) |
| Periprocedural complication rate (<24 h) | 1.94% (3/155) | 2.96% (4/153) |
| Perioperative mortality rate (<30 days) | 0% (0/155) | 0% (0/153) |
| Perioperative stroke/TIA (<30 days) | 0% (0/155) | 0% (0/153) |
| Pretreatment stenosis (mean) | 83.8% | 80.12% |
| Residual post-treatment stenosis (mean) | 3.40% | 3.42% |
| Restenosis rate | 15.49% (22/142) | 33.57% (47/140) |
| Symptomatic (before stenting) | 98.06% (152/155) | 97.39% (149/153) |
| Recurrent symptoms (ie, TIA/stroke/VBI symptoms >30 days) | 2.76% (4/145) | 11.26% (17/151) |
| TVR rate (ie, reintervention rate) | 4.83% (7/145) | 19.21% (29/151) |
| Total deaths at end of follow-up period | 7.10% (11/155) | 10.07% (14/139) |
| Mean clinical follow-up | 19.12 months | 26 months |
| Mean radiological follow-up | 14.23 months | 20.5 months |
TIA, transient ischemic attacks; TVR, target vessel revascularization; VBI, vertebrobasilar insufficiency.