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. 2021 Sep 1;13:6859–6867. doi: 10.2147/CMAR.S322678

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© 2021 Wang et al.

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Comparison of postoperative pain scores in the two groups. The VAS scores of rest pain (A) and active pain (B) in the both groups at 0 h (T1), 12 h (T2), 24 h (T3) and 48 h (T4) after surgery. Data represent the mean ± SD, compared with Group C, *P<0.01. Data were compared by Mann–Whitney U-test.

Abbreviation: VAS, visual analog scores.