Table 1.

Intrarater intraclass correlations (ICC) for the cross-sectional areas from the regions of interest of the muscles psoas major and minor (PS), multifidus (M), and longissimus (L) for L6 to L1.

Vertebra	Muscle	ICC	CI
			Lower	Upper
L6	PS	0.982	0.943	0.994
	M	0.930	0.779	0.978
	L	0.985	0.953	0.995
L5	PS	0.992	0.975	0.998
	M	0.985	0.955	0.995
	L	0.997	0.988	0.999
L4	PS	0.997	0.988	0.999
	M	0.994	0.981	0.998
	L	0.996	0.984	0.999
L3	PS	0.997	0.992	0.999
	M	0.985	0.956	0.995
	L	0.997	0.991	0.999
L2	PS	0.991	0.973	0.997
	M	0.950	0.847	0.984
	L	0.996	0.970	0.999
L1	PS	0.985	0.952	0.995
	M	0.994	0.982	0.998
	L	0.996	0.982	0.999

CI = confidence intervals.