Table 5 Receiver operating characteristic analysis results of risk factors and score.

From: A valuable computed tomography-based new diagnostic tool for severe chest lesions in active pulmonary tuberculosis: combined application of influencing factors

Variable

AUC (95% CI)

P value

Youden index

Cutoff value

Se

Sp

PPV (%)

NPV (%)

Dust exposure

0.633 (0.582–0.683)

<0.001

0.266

NA

0.876

0.390

47.27

83.46

Classification of cases

0.597 (0.545–0.649)

<0.001

0.194

NA

0.814

0.379

45.03

76.60

Age

0.627 (0.573–0.681)

<0.001

0.281

39.00

0.449

0.832

62.50

70.75

Albumin-globulin ratio

0.652 (0.601–0.703)

<0.001

0.258

0.918

0.697

0.561

49.80

74.77

Score

0.753 (0.708–0.798)

<0.001

0.371

−0.085

0.539

0.832

66.67

74.92

  1. AUC: area under the curve; CI: confidence interval; NA: not available; NPV: negative predictive value; PPV: positive predictive value; Se: sensitivity; Sp: specificity.
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