Table 1.

Baseline Characteristics of the AVF and Non-AVF Groups Pre- and Post-surgery.

	AVF (n=22) Mean±SD or N (%)	Non-AVF (n=111) Mean±SD or N (%)	P-value
Age, years	78.8±4.6	77.9±7.1	0.444
Sex, female	15 (68%)	82 (74%)	0.583
BMI, kg/m2	20.1±3.6	22.1±4.0	0.126
Preoperative conservative treatment period, days	69.5±41.2	65.4±73	0.800
Postoperative follow-up period, weeks	25.5±20.2	24.5±20	0.298
Thoracolumbar fracture (Th11–L2)	21 (95%)	88 (79%)	0.057
Intravertebral cleft	1 (4.5%)	21 (19%)	0.096

AVF, adjacent vertebral fracture; BMI, body mass index; SD, standard deviation; N, number