Effectiveness and postoperative rehabilitation of one-stage combined anterior-posterior surgery for severe thoracolumbar fractures with spinal cord injury

Table 1 Comparison of basic information

Groups	Male/female	Age (yr)	Causes of injury (Falling injury/traffic accidents/falling from heights)	Preoperative ASIA grade(B/C/D)	Frankel classification (A/B/C/D)	Preoperative AO classification (A3/B3/C2)	BMI (kg/m2)
Group 1 (n = 60)	35/25	45.37 ± 4.24	13/32/15	13/22/25	13/18/15/14	13/35/12	23.75 ± 1.69
Group 2 (n = 60)	29/31	45.26 ± 4.09	16/29/15	12/20/28	15/20/12/13	15/30/15	23.84 ± 1.76
χ2/t value	1.205	0.145	0.4579	0.305	0.619	0.861	0.286
P value	0.272	0.885	0.7954	0.859	0.892	0.650	0.776

ASIA: American Spinal Injury Association; BMI: Body mass index.