The qualitative and quantitative high-resolution computed tomography in the evaluation of interstitial lung diseases

Egyptian Journal of Radiology and Nuclear Medicine

Table 5 Receiver operating characteristic (ROC) curve analysis for the prediction of severe interstitial lung disease

Variable	Optimal cutoff	AUC	P value	Sensitivity	Specificity	PPV	NPV	Accuracy
TLV inspiratory	≤ 8988	0.653	0.111	69.44	71.43	86.2	47.6	70
MLD inspiratory	> − 761	0.621	0.134	52.78	85.71	90.5	41.4	62
HAA inspiratory	> 21.4	0.673	0.060	58.33	100	100	48.3	70
LAA inspiratory	> 49.8	0.506	0.944	30.56	100	100	35.9	50
TLV expiratory	≤ 7159	0.548	0.625	44.44	85.71	88.9	37.5	56
MLD expiratory	> − 781	0.690	0.011	83.33	50	81.1	53.8	74
HAA expiratory	> 21.5	0.753	< 0.001	66.68	85.71	92.3	50	72
LAA expiratory	> 48.2	0.585	0.325	33.33	100	100	36.8	52

AUC area under the curve, PPV positive predictive value, NPV negative predictive value