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Table 2 Results of Wilcoxon rank sum test

From: Using neighborhood gray tone difference matrix texture features on dual time point PET/CT images to differentiate malignant from benign FDG-avid solitary pulmonary nodules

Features Malignant lesionsa Benign lesionsa Z value P value
Early Busyness (4.28 ± 0.38)*10− 2 (4.71 ± 0.57)*10− 2 −4.213 p < 0.01
Early Coarseness (8.04 ± 1.52)*10− 2 (6.91 ± 1.42)*10− 2 −3.55 p < 0.01
Early Contrast (1.07 ± 0.33) *103 (1.07 ± 0.29) *103 −0.28 P = 0.78
Delayed Busyness (4.34 ± 0.40) *10−2 (4.89 ± 0.42)*10− 2 −6.02 p < 0.001
Delayed Coarseness (8.06 ± 1.29)*10−2 (6.50 ± 1.07)*10−2 −5.56 p < 0.001
Delayed Contrast (1.09 ± 0.29)*103 (1.22 ± 0.38) *103 −2.03 p = 0.042
Early SUVmax 11.22 ± 6.24 6.94 ± 3.58 −4.11 p < 0.01
  1. a Data: Mean ± SD