Table 4 Subgroup analysis of pulmonary hemorrhage

Sex (Male/female)

45/18

84/45

0.765, 0.382

Age (years)

62.0 ± 14.5

62.2 ± 13.0

0.098, 0.922

Smoking history (Yes/No)

12/51

17/112

1.137, 0.286

Pulmonary emphysema (Yes/No)

21/42

26/103

3.976, 0.046

Lesion diameter

2.7 ± 1.7

3.7 ± 2.3

3.567, 0.001

Lesion feature

 Solid

55

109

1.904, 0.393

 Ground glass

5

17

 Cavity

3

3

Lesion location

 Right upper lobe

18

21

5.094, 0.277

 Right middle lobe

5

7

 Right lower lobe

13

36

 Left upper lobe

16

35

 Left lower lobe

11

30

Patient position (Supine/Prone)

24/39

48/81

0.014, 0.905

Gelfoam (Yes/No)

15/48

62/67

10.365, 0.001

Pathology results(Benign/Malignant/ Insufficient material)

17/45/1

31/96/2

0.431, 0.876

Radiofrequency ablation (Yes/No)

20/43

20/109

10.744, 0.001

The number of samples

 1

18

51

8.048, 0.038

 2

34

62

 3

6

15

 4

5

1