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EJNMMI Research

Table 3 DeLong test of ROC curves between different models

From: Development of a PET/CT molecular radiomics-clinical model to predict thoracic lymph node metastasis of invasive lung adenocarcinoma ≤ 3 cm in diameter

Comparisons

Training

Testing

Z score

p value

Z score

p value

PET/CT vs. PET model

5.157

< 0.001

3.653

< 0.001

PET/CT vs. CT model

3.514

< 0.001

1.931

0.054

PET vs. CT model

1.299

0.194

1.35

0.177

Integrated vs. PET/CT model

3.943

< 0.001

1.65

0.099

Integrated vs. Clinical model

3.257

< 0.001

2.011

0.044

PET/CT vs. Clinical model

0.484

0.628

0.268

0.788

  1. The PET/CT, PET, and CT models represent PET/CT, PET, and CT radiomics models,respectively; integrated model represent PET/CT radiomics-clinical model
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