Table 3.

Morphometric prediction of 30 day mortality (ROC‐AUC)

Morphometric parameter	COVID‐19 Cohort I				COVID‐19 Cohort II
	AUC	SD	95% CI	P	AUC	SD	95% CI	P
PMAI	0.793	0.062	0.671–0.914	0.008	0.723	0.064	0.599–0.848	<0.001
PMTI	0.783	0.063	0.659–0.906	0.011	0.722	0.064	0.598–0.847	<0.001
cTMTI (compression)	0.793	0.099	0.598–0.987	0.008	0.727	0.070	0.590–0.864	0.001
TMTI (no compression)	0.778	0.113	0.556–0.999	0.012	0.814	0.065	0.687–0.940	<0.001

Receiver operator curve (ROC) analysis of muscle indices. AUC, area under the curve; cTMTI, compressed tight muscle thickness index; PMAI, psoas muscle area index; PMTI, psoas muscle thickness index; TMTI, tight muscle thickness index; 95% CI, 95% confidence interval.