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Comparison of prognosis efficacy between the two groups [cases (%)].
| Groups | n | Grade I | Grade II | Grade III | Grade IV | Grade V |
|---|---|---|---|---|---|---|
| Research group | 65 | 0(0) | 2(3.1) | 4(6.2) | 32(49.2) | 27(41.5) |
| Control group | 65 | 0(0) | 7(10.8) | 19(29.2) | 24(36.9) | 15(23.1) |
| U value | 2.956 | |||||
| P | <0.05 | |||||
