Table 2 Binary logistic regression analysis of the CT characteristics of nodules

Air bronchogram

80 (17.2)

407 (30.1)

0.013

1.534

1.095–2.149

BLL

12 (2.6)

175 (13.0)

< 0.001

4.245

2.259–7.978

Size (mm)

10.1 ± 4.5 (4 ~ 29)

11.9 ± 5.2 (4 ~ 29)

< 0.001

1.157

1.114–1.202

Regular shape

291 (62.6)

1117 (82.7)

< 0.001

7.287

5.164–10.281

Well-defined boundary

233 (50.1)

1114 (82.5)

< 0.001

4.211

3.253–5.452

Lobulation sign

87 (18.7)

451 (33.4)

0.916

0.983

0.710–1.361

Pleural indentation

51 (11.0)

214 (15.9)

0.361

1.208

0.805–1.814