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Comparison of the incidence of adverse reactions between the groups (n, %).
| Groups | N (cases) | Burning sensation | Redness and swelling | Pain | Complication rate |
|---|---|---|---|---|---|
| Observation | 38 | 1 (2.63) | 0 (0.00) | 1 (2.63) | 2 (5.26) |
| Control | 38 | 5 (13.16) | 3 (7.89) | 4 (10.53) | 12 (31.58) |
| t/χ2 | 7.095 | ||||
| P-value | 0.007 |
