Table 1.

Physical characteristics of AIS girls by group

	Group Pr	Group NP	Group Su	Group NS
Age before bracing (years)	12.7 ± 1.7	13.2 ± 1.4	12.2 ± 1.5	13.2 ± 1.4*
Years after menarche before bracing (years)	1.0 ± 0.7	0.9 ± 0.7	0.9 ± 1.0	0.9 ± 0.7
Age at menarche (years)	13.1 ± 1.0	12.6 ± 1.2	13.1 ± 0.9	12.6 ± 1.2
Risser grade before bracing	1.4 ± 1.6	2.1 ± 1.5†	0.8 ± 1.2	2.2 ± 1.5*
Curve magnitude before bracing (°)	30.4 ± 6.1	29.4 ± 5.5	32.6 ± 4.3	29.2 ± 5.4*
Duration of brace treatment (years)	2.4 ± 1.5	2.5 ± 0.9	2.2 ± 1.4	2.5 ± 0.9

Note: *†Indicates significant difference between Groups Pr and NP, and between Groups Su and NS, respectively (P < 0.05).

NP, non‐progressed; NS, ineligible for surgery; Pr, progressed; Su, eligible for surgery.