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| Therapeutic time (month) | Valid cases (%) | Invalid cases (%) | P value |
|---|---|---|---|
| 3 | 81 (79.41) | 21 (20.59) | 0.986 |
| 6 | 78 (79.59) | 20 (20.41) | |
| 9 | 77 (81.05) | 18 (18.95) | |
| 12 | 73 (81.11) | 17 (18.89) | |
| 18 | 67 (77.01) | 20 (22.99) | |
| 24 | 63 (78.75) | 17 (21.25) |
