Table 1.

Demographic and clinical characteristics at baseline for 108 patients with adolescent idiopathic scoliosis

Characteristics	Patients
	All (n = 108)		RCO group (n = 13)		Boston-style TLSO group (n = 95)		P
	Mean (SD)	n (%)	Mean (SD)	n (%)	Mean (SD)	n (%)
Age (years)	12.5 (1.3)		12.5 (1.3)		12.5 (1.3)		0.762
Female sex		93 (86)		11 (85)		82 (86)	1.00
Race							0.282
Caucasian		78 (72)		10 (77)		68 (72)
African American		16 (15)		0 (0)		16 (17)
Hispanic		1 (1)		0 (0)		1 (1)
Asian/Pacific Islander		2 (2)		0 (0)		2 (2)
Other		11 (10)		3 (23)		8 (8)
Major curve location
Thoracic		51 (47)		5 (38)		46 (48)	0.500
Thoracolumbar		3 (3)		0 (0)		3 (3)	1.00
Lumbar		24 (22)		1 (7.7)		23 (24)	0.290
Double major		0 (0)		0 (0)		0 (0)
Double thoracic		9 (8)		3 (23)		6 (6)	0.075
Thoracic and thoracolumbar		19 (18)		4 (31)		15 (16)	0.238
Triple		2 (2)		0 (0)		2 (2)	1.00
Major curve (°)	31.6 (4.4)		32.7 (4.8)		31.4 (4.4)		0.387
Major curve >30°		56 (52)		7 (54)		49 (51)	0.878
Risser stage							0.710
0		68 (63)		7 (54)		61 (64)
1		24 (22)		4 (31)		20 (21)
2		16 (15)		2 (15)		14 (15)

RCO Rigo Chêneau orthosis, TLSO thoracolumbosacral orthosis, SD standard deviation