. 2020 Jan;34(1):76–82. [Article in Chinese] doi: 10.7507/1002-1892.201906105

表 3.

Comparison of fixed segment height between the two groups before and after operation ( Inline graphic , mm)

两组患者手术前后固定节段高度比较（ Inline graphic ，mm）

组别 Group	例数 n	术前 Preoperative	术后 3 d Postoperative at 3 days	术后 1 个月 Postoperative at 1 month	术后 6 个月 Postoperative at 6 months	术后 10 个月 Postoperative at 10 months	统计值 Statistic
^与术前比较P<0.05 ^Compared with preoperative value，P<0.05
微创组 Minimally invasive group	24	40.8±2.2	48.1±1.9^*	47.9±2.1^*	48.3±1.8^*	48.2±2.2^*	F=35.614 P=0.000
开放组 Traditional group	28	40.6±3.2	49.1±2.2^*	49.3±3.2^*	49.5±2.6^*	49.3±2.9^*	F=38.916 P=0.000
统计值 Statistic		t=0.536 P=0.362	t=–0.843 P=0.141	t=–0.967 P=0.102	t=–0.395 P=0.203	t=–0.351 P=0.195