Application of clinical and CT imaging features in the evaluation of disease progression in patients with COVID-19

Table 4 Analysis of receiver operator characteristic curve

Variable	AUC	Cut-off values	Sensitivity	Specificity	95%CI
Complicated with diabetes mellitus	0.673	0.084	15.75	88.94	(0.443,0.773)
Lymphocyte decrease	0.671	0.227	68.73	58.98	(0.526,0.762)
D-dimer increased	0.683	0.283	34.72	91.67	(0.572,0.772)
Number of lung lobes involved = 5	0.727	0.436	96.43	47.91	(0.616,0.874)
NAL	0.782	0.772	90.682	43.91	(0.726,0.773)

Note: Lymphocyte decrease: lymphocyte count < 1.5 × 10⁹ / L; NAL: Normally aerated lung

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