Table 1.

Demographics of patients

	ASF	%	PSF	%	Total	%
N	43		165		208
Male*	1	2	13	8	14	7
Female*	42	98	152	92	194	93
Height (cm)**	155.5 ± 6.3 (138–168)		154.5 ± 6.9 (133–173)		154.7 ± 6.9 (133–173)
Weight (kg)**	45.9 ± 5.7 (32–61)		44.9 ± 6.7 (26–65)		45.3 ± 6.5 (26–65)
Age (years)**	15.5 ± 3.3 (12–27)		15.7 ± 3.3 (10–29)		15.7 ± 3.3 (10–29)
Lenke type1†	36	84	102	62	138	63
Lenke type2†	7	16	63	38	70	32
Lumbar modifier A††	24	56	102	62	126	60
Lumbar modifier B††	9	21	35	21	44	21
Lumbar modifier C††	10	23	28	17	38	18

ASF anterior spinal correction with fusion, PSF posterior spinal correction with fusion

* No significant difference by Chi-square test regarding proportion of gender

** No significant difference by Mann–Whitney U test

^†p = 0.005 by Chi-square test regarding proportion of type 1 and 2

^††No significant difference by one way factorial ANOVA regarding proportion of Lumbar modifier