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Comparison of clinical efficacy between observation group and control group [n (%)]
| Group | Apparent | Improved | Ineffective | Overall response rate |
|---|---|---|---|---|
| Observation group (n = 50) | 35 (70.00) | 11 (22.00) | 4 (8.00) | 46 (92.00) |
| Control group (n = 50) | 25 (50.00) | 13 (26.00) | 12 (24.00) | 38 (76.00) |
| χ2 -value | 5.833 | 4.762 | ||
| P-value | 0.054 | 0.029 | ||
