Analysis of meta-regression with in-stent restenosis according to patient population and characteristics
| No. of Studies | P Value | Heterogeneity I2 (%) | |
|---|---|---|---|
| Patient characteristics | |||
| Mean age | 46 | .009 | 78.4 |
| Male % | 47 | .752 | 82.8 |
| Hypertension | 34 | .710 | 84.2 |
| Diabetes | 34 | .267 | 83.5 |
| Hyperlipemia | 32 | .054 | 78.1 |
| Smoking | 34 | .946 | 83.7 |
| IS as the qualifying event | 36 | .513 | 84.2 |
| TIA as the qualifying event | 33 | .621 | 81.0 |
| Duration from symptom to treatment | 20 | .489 | 82.3 |
| Lesion characteristics | |||
| Anterior circulation | 47 | .995 | 82.2 |
| ICA | 44 | .956 | 81.4 |
| MCA | 44 | .924 | 81.4 |
| ACA | 44 | .161 | 80.4 |
| Posterior circulation | 47 | .998 | 82.2 |
| VA | 42 | .122 | 80.8 |
| BA | 42 | .208 | 80.4 |
| VBJ | 42 | .232 | 81.0 |
| PCA | 43 | .951 | 81.1 |
| Preprocedural stenosis degree | 42 | .368 | 81.4 |
| Length of stenosis | 17 | .731 | 79.0 |
| Mori type | |||
| Mori A | 13 | .955 | 72.1 |
| Mori B | 12 | .705 | 52.3 |
| Mori C | 12 | .987 | 53.3 |
| Procedure-related characteristics | |||
| Procedural success rate | 42 | .052 | 80.1 |
| Stent type (BMS or SES) | 47 | .817 | 83.6 |
| Mean degree of residual stenosis | 38 | .778 | 80.9 |
| Periprocedural complication rate | 43 | .699 | 82.5 |
| Image follow-up characteristics | |||
| Image follow-up time (mo) | 46 | .404 | 83.1 |
| Image follow-up rate >60% | 51 | .004 | 81.2 |
Note:—IS indicates ischemic stroke; ACA, anterior cerebral artery; VA, vertebral artery; BA, basilar artery; VBJ, vertebrobasilar junction; PCA, posterior cerebral artery; BMS, balloon-mounted stent.