. 2020 May;34(5):550–556. [Article in Chinese] doi: 10.7507/1002-1892.201906047

表 2.

Comparison of VAS scores at different time points of pre- and post-operation between the two groups ( Inline graphic )

两组患者手术前后各时间点 VAS 评分比较（ Inline graphic ）

组别 Group	例数 n	术前 Preoperative	术后 1 周 Postoperative at 1 week	术后 1 个月 Postoperative at 1 month	术后 6 个月 Postoperative at 6 months	术后 12 个月 Postoperative at 12 months	末次随访 Last follow-up	统计值 Statistic
^与术前比较 P<0.05 ^Compared with preoperative value, P<0.05
改良 TLIF 组 Modified TLIF group	54	6.727±0.918	3.168±0.889^*	1.925±0.615^*	1.763±0.508^*	1.416±0.882^*	1.309±0.860^*	F=352.469 P=0.000
PLIF 组 PLIF group	52	6.873±1.010	3.240±0.884^*	2.333±0.736^*	2.082±0.646^*	1.527±0.716^*	1.483±0.734^*	F=324.889 P=0.000
统计值 Statistic		t=−0.350 P=0.727	t=−0.773 P=0.441	t=−3.399 P=0.001	t=−2.768 P=0.007	t=−0.885 P=0.378	t=−0.613 P=0.541