Table 3.

ICC analysis of the two evaluators.

Values	Evaluator A ICC	Evaluator B ICC	ICC between A and B
Signal intensity (psoas major muscles)	0.84 (95% CI: 0.75, 0.92)	0.8 (95% CI: 0.62, 0.96)	0.82 (95% CI: 0.66, 0.92)
Signal intensity (multifidus muscles)	0.85 (95% CI: 0.73, 0.98)	0.82 (95% CI: 0.71, 0.94)	0.83 (95% CI: 0.76, 0.89)
Signal intensity (erector spinae muscles)	0.81 (95% CI: 0.06, 0.16)	0.84	0.82
Volume (psoas major muscles)	0.79 (95% CI: 0.66, 0.96)	0.82 (95% CI: 0.54, 0.92)	0.8 (95% CI: 0.66, 0.95)
Volume (multifidus muscles)	0.76 (95% CI: 0.72, 0.92)	0.8 (95% CI: 0.67, 0.94)	0.79 (95% CI: 0.61, 0.85)
Volume (erector spinae muscles)	0.82 (95% CI: 0.75, 0.92)	0.76 (95% CI: 0.62, 0.86)	0.81 (95% CI: 0.72, 0.86)
Cobb angle	0.78 (95% CI: 0.64, 0.96)	0.76 (95% CI: 0.71, 0.85)	0.76 (95% CI: 0.72, 0.89)
Maximum vertebral inclination angle	0.75 (95% CI: 0.61, 0.86)	0.81 (95% CI: 0.76, 0.89)	0.76 (95% CI: 0.68, 0.87)
Flexibility index	0.76 (95% CI: 0.71, 0.87)	0.82 (95% CI: 0.76, 0.92)	0.8 (95% CI: 0.72, 0.92)
Fat fraction	0.81 (95% CI: 0.72, 0.91)	0.85 (95% CI: 0.78, 0.95)	0.83 (95% CI: 0.76, 0.92)
Maximum thickness of erector spinae muscles	0.8 (95% CI: 0.72, 0.91)	0.81 (95% CI: 0.73, 0.89)	0.81 (95% CI: 0.68, 0.87)

ICC, intraclass correlation coefficient; CI, confidence interval.