Table 1 Baseline characteristics between 2 groups

Patients number

38

48

-

Age (y)

46.5 ± 11.1

47.8 ± 12.7

0.621

Gender

0.933

 Male

9

11

 Female

29

37

Nodule number

1.000

 Single

37

46

 Multiple

1

2

Diameter (mm)

7.1 ± 2.0

6.7 ± 1.9

0.401

Nodule-pleura distance (mm)

7.5 (Q1: 2.9; Q3: 13.0)

7.8 (Q1: 4.0; Q3: 15.0)

0.508

Nature of the nodules

0.430

 Pure GGN

32

44

 Mixed GGN

7

6

Location of the nodules

0.612

 Right upper

9

12

 Right middle

0

3

 Right lower

10

10

 Left upper

10

13

 Left lower

10

12