Application of dezocine patient-controlled epidural analgesia in postoperative analgesia in patients with total myomectomy

Table 2 Comparison of visual simulation rating scores between the two groups

Group	n	4 h after surgery	6 h after surgery	12 h after surgery	24 h after surgery	36 h after surgery	48 h after surgery
Control group	50	2.72 ± 0.56	3.21 ± 0.47	3.07 ± 0.41	3.19 ± 0.37	2.89 ± 0.41	2.54 ± 0.36
Observation group	50	2.16 ± 0.41	2.34 ± 0.38	2.22 ± 0.39	2.14 ± 0.34	2.06 ± 0.32	1.78 ± 0.31
t		5.705	10.178	10.622	14.776	11.284	11.312
P value		0.000	0.000	0.000	0.000	0.000	0.000

Data are mean ± standard deviation.