Identifying critically ill patients with low muscle mass: Agreement between bioelectrical impedance analysis and computed tomography.

•Previous studies have shown that low muscle mass is associated with outcome. The absolute values of BIA- and CT-derived muscle mass are not comparable but the two are significantly correlated.•BIA and CT identify the same critically ill population with low muscle mass.•The BIA- and CT-derived markers for muscle quality, phase angle and skeletal muscle density, are correlated.