Table 1. Demographic data are shown for the adolescent idiopathic scoliosis (AIS) patients and matched controls.

	AIS (n = 77)	Controls (n = 22)
Mean age in years ± SD	17.0±2.8	17.0±0.7
Girls, n	60 (78%)	16 (73%)
Triradiate cartilage closed	100%)
Risser’s stage 0	0 (0%)
Risser’s stage 1	5 (6%)
Risser’s stage 2	1 (1%)
Risser’s stage 3	8 (10%)
Risser’s stage 4	16 (21%)
Risser’s stage 5	47 (61%)
Primary thoracic curve pattern	53 (69%)
Lenke I	37 (48%)
Lenke II	16 (21%)
Primary (thoraco)lumbar curve pattern	6 (8%)
Lenke V	6 (8%)
Double curve pattern	18 (23%)
Lenke III (primary thoracic)	7 (9%)
Lenke IV (primary thoracic)	2 (3%)
Lenke VI (primary (thoraco)lumbar)	9 (12%)

SD = standard deviation.