Concordance between muscle mass assessed by bioelectrical impedance analysis and by muscle ultrasound: a cross-sectional study in a cohort of patients on chronic hemodialysis

Table 3 ROC curve of different muscle parameters assessed by ultrasound as predictors of sarcopenia

	AUC	P value	Cut-off	Sensitivity	Specificity	PPV	NPV
Quadriceps muscle CSA:
All patients	0.807	0.001	2.92	75%	73.3%	81.8%	64.7
Male	0.767	0.039	2.96	73.3%	75%	84.6%	60%
Female	0.857	0.017	2.92	77.8%	85.7%	87.5%	75%
Quadriceps muscle thickness	0.624	0.199	1.20	87.5%	33.3%	67.7%	62.5%
Biceps CSA	0.641	0.138	5.98	47.6%	88.2%	83.3%	57.7%
Biceps thickness	0.667	0.081	1.52	42.9%	88.2%	81.8%	55.6%

Abbreviations: AUC: area under the curve, CSA: cross-sectional area, NPV: negative predictive value. PPV: positive predictive value, ROC: receiver operating characteristic

ISSN: 1471-2369