表 3.

VAS scores before and after operation in the two groups (n=47, )

两组患者手术前后 VAS 评分（n=47， ）

组别 Group	术前 Preoperative	术后 2 h Two hours after operation	术后 12 h Twelve hours after operation	术后 24 h Twenty-four hours after operation
试验组 Trial group	1.79±1.35	3.06±1.78	2.94±1.76	2.30±1.26
对照组 Control group	2.28±2.07	3.43±1.87	3.28±1.28	2.77±1.386
统计值 Statistic	t=1.357 P=0.178	t=0.958 P=0.341	t=1.072 P=0.287	t=1.709 P=0.091