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| Outcome | Time point (months) | No. of studies | Risk ratio (95% CI) |
| Clinical failure | 6 | 1 | Not estimable* |
| 12 | 1 | 0.33 (0.01, 7.95) | |
| Radiological failure | 6 | 1 | 1.67 (0.43, 6.51) |
| 12 | 1 | 2.00 (0.75, 5.33) |
*due to lack of events
Abbreviations ‐ CI: confidence interval; FC: formocresol.
