Table 7.

Characteristics of patients with different age of IS onset

	AIS N = 152	EOIS N = 59	P-value
Age (y)	18.5 ± 1.8 (12.3–24.1)	16.3 ± 7.1 (12.4–50.1)	0.62a
Age of menarche	12.9 ± 1.3 (10.0–15.1)	13.1 ± 1.1 (10.5–16)	0.34b
Cobb angle (°)	35.2 ± 15.6 (10–90)	49.4 ± 19.5 (14–114)	0.0001a
Progression rate (°/month)	0.52 ± 0.75 (0–4.0)	1.15 ± 1 (0–4.0)	0.0001a
Surgical treatment	16.4%	50.8%	0.0001c

Abbreviations: IS idiopathic scoliosis, ^a – U-Mann-Whitney test, ^b – t-test, ^c – Chi-square test

significant P-values (<0.05) are in bold