Figure 2 Comparison of pain scores between the 2 groups in different states at 48 h after surgery (χ̄±s). (A) Comparison of the visual analog scale (VAS) scores of the 2 groups of patients at activity 48 h after the operation. The VAS scores of the study group and the reference group at activity 48 h after the operation were (3.15±0.34) points and (3.57±0.41) points respectively. * Indicates that there is a significant difference in the VAS scores between the 2 groups at activity 48 h after the operation (t=5.171, P<0.05). (B) Comparison of the VAS scores of the 2 groups of patients at rest 48 h after the operation. The VAS scores of the study group and the reference group at rest 48 h after the operation were (2.74±0.31) points and (3.13±0.29) points, respectively; ** indicates that there is a significant difference in the VAS scores at rest 48 h after the operation between the 2 groups (t=6.025, P<0.01).