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Orthodontic treatment efficacy of the two groups
| Markedly effective | Effective | Ineffective | Total effective rate | |
|---|---|---|---|---|
| Control group (n=42) | 27 (64.3) | 8 (19.0) | 7 (16.7) | 35 (83.3) |
| Observation group (n=55) | 38 (69.1) | 15 (27.3) | 2 (3.6) | 53 (96.4) |
| χ2 | 0.2487 | 0.8907 | 4.8041 | 4.8041 |
| P | 0.6180 | 0.3453 | 0.0284 | 0.0284 |
