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Table 5 Test of differences between the Area Under the Curve (AUC) for pre-specified hemoglobin concentration cutoffs

From: Performance of a quantitative fecal immunochemical test for detecting advanced colorectal neoplasia: a prospective cohort study

 

Reference group

Comparator group

Z - stats

p-value

Threshold (ng/ml)

50

75

2.3587

0.01834

AUC

0.58209

0.56223

Threshold (ng/ml)

50

100

2.8421

0.00448

AUC

0.58209

0.55429

Threshold (ng/ml)

50

125

2.7122

0.00668

AUC

0.58209

0.55485

Threshold (ng/ml)

50

150

2.9666

0.00301

AUC

0.58209

0.55028

  1. p-value from DeLong’s test for two correlated ROC curves