. 2019 Jul;33(7):807–813. [Article in Chinese] doi: 10.7507/1002-1892.201903096

表 3.

Comparison of ODI score between the two groups at pre- and post-operation ( Inline graphic )

两组手术前后ODI评分比较（ Inline graphic ）

组别 Group	例数 n	术前 Preoperative	术后 3 个月 Three months after operation	术后 6 个月 Six months after operation	术后 12 个月 Twelve months after operation	统计值 Statistic
^与术前比较 P<0.05 ^Compared with preoperative value, P<0.05
U	36	40.7±12.5	23.7±9.4^*	17.4±7.5^*	15.5±8.3^*	F=59.711 P= 0.000
B	34	43.6±12.4	24.7±9.3^*	18.9±8.7^*	15.5±7.4^*	F=55.327 P= 0.000
统计值 Statistic		t=–0.977 P= 0.332	t=–0.456 P= 0.650	t=–0.768 P= 0.445	t=0.019 P=0.985