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Comparison of the incidence of stent restenosis.
| Group | No. of cases | Restenosis rate 1 month after operation, cases (%) | Target lesion diameter loss ratio, % | Restenosis rate 1 year after operation, cases (%) | Target lesion diameter loss rate, % |
|---|---|---|---|---|---|
| Control | 91 | 18 (19.78) | 35.4±10.2 | 23 (25.27) | 42.3±15.4 |
| Observation | 55 | 20 (36.36) | 76.8±15.6 | 28 (50.91) | 86.5±18.2 |
| t/χ2 | 4.897 | 9.632 | 9.911 | 13.232 | |
| P-value | 0.027 | 0.000 | 0.002 | 0.000 |
