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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