Risk factors for anxiety and depression in elderly frail patients based on bedside ultrasound multimodal assessment

Table 4 Comparison of diagnostic performance of prediction models

Model	Area under the curve	95%CI	Sensitivity	Specificity	Positive predictive value/negative predictive value
DTF alone	0.682	0.59-0.77	71.4%	60.3%	53.6%/76.4%
RF-CSA alone	0.658	0.56-0.75	66.7%	62.8%	52.5%/75.4%
LUS alone	0.635	0.54-0.73	61.9%	65.4%	52.0%/74.0%
DTF + RF-CSA	0.728	0.64-0.82	73.8%	66.7%	57.4%/80.8%
DTF + RF-CSA + LUS	0.768	0.68-0.85	76.2%	70.5%	61.5%/82.7%
All 5 parameters	0.782	0.70-0.86	78.6%	69.2%	61.1%/84.2%
≥ 3 abnormal parameters	0.718	0.63-0.81	72.5%	70.8%	60.9%/80.4%

DTF: Diaphragm thickness fraction; LUS: Lung ultrasound score; RF-CSA: Rectus femoris cross-sectional area.