Relationship between ISR and clinical or anatomic characteristics
| ISR | Non-ISR | P | |
|---|---|---|---|
| Lesion site | |||
| Anterior (n = 31) | 8 | 23 | NS |
| Posterior (n = 8) | 5 | 3 | |
| Degree of vascular tortuosity | |||
| Tortuous (n = 18) | 6 | 12 | NS |
| Direct (n = 21) | 7 | 14 | |
| Reference artery diameter/stent diameter | |||
| <0.78 (n = 19) | 10 | 9 | 0.013 |
| ≥0.78 (n = 20) | 3 | 17 | |
| Length of vascular lesions | |||
| <5.39 mm (n = 20) | 3 | 17 | 0.013 |
| ≥5.39 mm (n = 19) | 10 | 9 | |
| Residual stenosis | |||
| >10.7% (n = 24) | 7 | 17 | NS |
| ≤10.7% (n = 15) | 6 | 9 | |
| Reference artery diameter | |||
| ≤2.5 mm and >2 mm (n = 24) | 7 | 17 | |
| ≤2 mm and >1.5 mm (n = 13) | 5 | 8 | NS |
| ≤1.5 mm (n = 2) | 1 | 1 |
Note:—The relationship between ISR and each independent factor was analyzed by the Pearson χ-square test. NS indicates nonsignificant.