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Table 2 CT features of SSNs in the derivation and validation cohorts

From: A CT-based nomogram for predicting the risk of adenocarcinomas in patients with subsolid nodule according to the 2021 WHO classification

Characteristics

Total (N=681)

Derivation cohort (N=423)

Validation cohort (N=258)

t/Z/χ2

P value

Lesion Size (mm)

11.32 ± 5.00

11.33 ± 4.98

11.30 ± 5.03

0.074a

0.941

Mean CT value (HU)

-526.16 ± 130.92

-528.38 ± 131.66

-522.52 ± 129.88

-0.566a

0.571

Volume (cm3)

0.34 (0.20, 0.82)

0.34 (0.22, 0.82)

0.34 (0.19, 0.80)

0.099b

0.921

Mass (g)

0.15 (0.09, 0.34)

0.15 (0.09, 0.35)

0.15 (0.08, 0.33)

-0.163b

0.870

Vascular change

   

0.088c

0.767

 Present

246 (36.1%)

151 (35.7%)

95 (36.8%)

  

 Absent

435 (63.9%)

272 (64.3%)

163 (63.2%)

  

Bronchiole change

   

0.357c

0.550

 Present

132 (19.4%)

79 (18.7%)

53 (20.5%)

  

 Absent

549 (80.6%)

344 (81.3%)

205 (79.5%)

  

Lobulation

   

0.103c

0.748

 Present

264 (38.8%)

162 (38.3%)

102 (39.5%)

  

 Absent

417 (61.2%)

261 (61.7%)

156 (60.5%)

  

Bubble

   

0.718c

0.397

 Present

97 (14.2%)

64 (15.1%)

33 (12.8%)

  

 Absent

584 (85.8%)

359 (84.9%)

225 (87.2%)

  

Pleural attachment

   

0.771c

0.380

 Present

233 (34.2%)

150 (35.5%)

83 (32.2%)

  

 Absent

448 (65.8%)

273 (64.5%)

175 (67.8%)

  

Spiculation

   

0.051c

0.822

 Present

111 (16.3%)

70 (16.5%)

41 (15.9%)

  

 Absent

570 (83.7%)

353 (83.5%)

217 (84.1%)

  

Lesion-lung interface

   

0.568c

0.451

 Clear

450 (66.1%)

275 (65.0%)

175 (67.8%)

  

 Blurry

231 (33.9%)

148 (35.0%)

83 (32.2%)

  
  1. at value; bZ value; cχ2 value