表 4.

Comparison of thoracolumbar/lumbar curve Cobb angle and proximal thoracic curve Cobb angle at pre- and post-operation between the two groups (°, )

两组患者手术前后各时间点胸腰弯/腰弯 Cobb 角和上胸弯 Cobb 角比较（°， ）

组别 Group	例数 n	胸腰弯/腰弯 Cobb 角 Thoracolumbar/lumbar curve Cobb angle						上胸弯 Cobb 角 Proximal thoracic curve Cobb angle
		术前 Preoperative	术后 1 个月 Postoperative at 1 month	术后 1 年 Postoperative at 1 year	术后 2 年 Postoperative at 2 years	统计值 Statistic		术前 Preoperative	术后 1 个月 Postoperative at 1 month	术后 1 年 Postoperative at 1 year	术后 2 年 Postoperative at 2 years	统计值 Statistic
*与同组术前比较P<0.05，#与同组术后 1 个月比较P<0.05，△与同组术后 1 年比较P<0.05 *Compared with preoperative value, P<0.05;#compared with postoperative value at 1 month, P<0.05;△compared with postoperative value at 1 year, P<0.05
A	17	30.0±6.7#△	8.9±4.5*△	6.3±3.7*#	5.2±3.5*#△	F=102.310 P= 0.000		27.1±4.9#△	17.1±4.7*△	13.8±4.5*#	12.3±4.1*#△	F=36.291 P= 0.000
B	20	25.6±8.9#△	9.0±5.3*△	7.0±4.4*#	5.8±3.8*#△	F= 48.715 P= 0.000		25.2±7.0#△	17.2±5.0*△	13.5±4.3*#	11.7±4.1*#△	F=26.028 P= 0.000
统计值 Statistic		t=1.679 P=0.102	t=–0.034 P= 0.973	t=–0.502 P= 0.619	t=–0.510 P= 0.613			t=0.964 P=0.341	t=–0.034 P= 0.966	t=0.193 P=0.848	t=0.468 P=0.643