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Table 3 Receiver operating characteristic curves data

From: Serum Rcn3 level is a potential diagnostic biomarker for connective tissue disease-associated interstitial lung disease and reflects the severity of pulmonary function

Variables

Cutoff value

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Accuracy (%)

LRPT

LRNT

Youden's index

AUC

P value

Rcn3 (ng/mL)

2.73

69

69

65

73

45

2.23

0.45

0.38

0.69

0.006

95% CI

 

0.50–0.83

0.52–0.82

0.46–0.80

0.56–0.86

0.33–0.57

1.32–3.78

0.26–0.77

 

0.57–0.81

 
  1. PPV Postive predictive value, NPV Negative predictive value, LRPT Likelihood ratio of positive test, LRNT Likelihood ratio of negative test, AUC Area under the curve, CI Confidence interval