表 1.

Comparison of VAS score of lower extremity and ODI between groups before and after operation ()

3组患者手术前后下肢VAS评分和ODI比较（）

组别 Group	例数 n	下肢VAS评分 VAS score of lower extremity					ODI
		术前 Preoperative	术后1 d Postoperative at 1 day	术后1个月 Postoperative at 1 month	术后3个月 Postoperative at 3 months		术前 Preoperative	术后6个月 Postoperative at 6 months	差值 Difference	统计值 Statistic
*与FD组比较P<0.05，#与PELD组比较P<0.05 *Compared with FD group, P<0.05; #compared with PELD group, P<0.05
FD	160	8.1±0.8	2.4±0.7	0.9±0.6	0.3±0.5		42.7±3.2	5.9±2.2	36.8±4.6#	t=120.600 P<0.001
PELD	86	8.2±0.8	2.5±0.7	0.8±0.6	0.2±0.5		42.7±3.1	10.6±3.9	32.1±4.6*	t=59.300 P<0.001
UBED	101	7.9±1.0	2.2±0.7	0.9±0.6	0.3±0.5		42.4±3.6	6.2±2.1	36.2±5.1#	t=86.600 P<0.001
统计值 Statistic		时间效应F=−30.300，P<0.001 交互效应F=0.890，P=0.373 组别效应F=−1.230，P=0.220					F=0.200 P=0.817	－	F=29.080 P<0.001