Table 1.

Comparison between right and left muscle groups for individual skeletal muscle cross sectional areas (CSA) (cm²).

Skeletal Muscle Variable	Psoas CSA (cm2)	Paravertebral CSA (cm2)	Anterior Abdominal Wall CSA (cm2)	Whole Slice SM CSA (cm2)
Right side mean ± SD	9.7 ± 3.4	28.5 ± 7.2	31.3 ± 9.8	69.3 ± 17.6
Left side mean ± SD	9.7 ± 3.7	29.8 ± 7.5	30.5 ± 9.7	69.9 ± 18.0
Mean difference	−0.002 p = 0.099	1.3 p < 0.0001	−0.8 p = 0.013	0.6 p = 0.20