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. 2021 May 27;15:2289–2297. doi: 10.2147/DDDT.S306120

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© 2021 Feng et al.

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Evaluation of the patient-reported pain score (VAS) between the two groups during the postoperative period. Comparison of pain scores of both groups at 0, 12, 24 and 48 h after surgery (30 patients in each group, data are expressed as mean ± SD). There were no significant differences in pain scores between the two groups (according to the Mann–Whitney U-test) during the postoperative period (P>0.05).