TABLE II.

Additional Characteristics of Included Studies^*

Characteristic	AVBT	PSF
Sample size, median (IQR)	20.0 (11.5-28.5)	51.5 (32.3-112.5)
Publication year, median (IQR)	2018 (2017-2019)	2016.5 (2013-2017)
Female (no. [%])	140 (66.4)	445 (41.6)
Age (yr)	12.4	14.2
Follow-up (mo)	33.7	46.9
Preop. Risser score	0.4	1.4
Preop. Sanders score	3.1	3.7
Preop. flexibility (°)	44.6	39.2
Vertebrae fused/tethered (no.)	7.3	10.2

^*AVBT = anterior vertebral body tethering, PSF = posterior spinal fusion, and IQR = interquartile range. Frequency weighted averages are reported unless otherwise specified.