Table 2.

Comparison of temporal changes in the paraspinal muscle elasticity of the surgery and brace groups.

Treatment groups	Measurement side	Time points being compared		Paraspinal muscle elasticity change (kPa)	P-value
Surgery	Concave	Baseline	6 months	5.9 (0.7–11.0)	0.025
		6 months	12 months	− 3.5 (− 8.8–1.9)	0.204
		Baseline	12 months	2.4 (− 2.6–7.4)	0.340
	Convex	Baseline	6 months	2.5 (− 2.6–7.6)	0.338
		6 months	12 months	− 3.4 (− 8.8–2.0)	0.209
		Baseline	12 months	− 0.9 (− 6.0–4.1)	0.712
Brace	Concave	Baseline	6 months	− 1.6 (− 7.3–4.2)	0.592
		6 months	12 months	5.0 (− 1.4–11.4)	0.123
		Baseline	12 months	3.4 (− 2.6–9.4)	0.260
	Convex	Baseline	6 months	− 1.0 (− 6.7–4.8)	0.741
		6 months	12 months	3.9 (− 2.4–10.3)	0.225
		Baseline	12 months	3.0 (− 3.0–9.0)	0.331

Significant values are in bold.

Data are estimated means (95% confidence intervals [CI]).