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Table 2 Comparison of patients with and without PTX

From: Transbronchial biopsy from the upper pulmonary lobes is associated with increased risk of pneumothorax – a retrospective study

Parameter

without PTX (n = 747)

with PTX (n = 49)

OR

95% CI

p

Age (years)

63 ± 13

66 ± 11

0.98

0.95–1.00

0.06

Male No. (%)

430 (58)

31 (63)

1.27

0.70–2.31

0.46

BMI (kg/m2)

28 ± 15

25 ± 5

1.09

1.02–1.16

0.01

No. of samples ≥4 No. (%)

180 (24)

19 (39)

2.00

1.10–3.63

0.03

Indication to TBB

 Nodular lesion (suspicion of tumour) No. (%)

355 (47)

30 (61)

1.74

0.96–3.15

0.08

 Diffuse lung disease (suspicion of pulmonary fibrosis) No. (%)

173 (23)

14 (29)

1.33

0.70–2.52

0.49

 Infiltrates of unknown etiology No. (%)

162 (22)

3 (6)

0.24

0.07–0.77

< 0.01

 Other No. (%)

57 (8)

2 (4)

0.52

0.12–2.18

0.42

Sampling location (pulmonary lobe)

 Sample from RUL No. (%)

124 (17)

12 (25)

1.63

0.83–3.21

0.17

 Sample from RML No. (%)

116 (15)

6 (12)

0.76

0.32–1.82

0.56

 Sample from RLL No. (%)

243 (33)

9 (18)

0.47

0.22–0.98

0.04

 Sample from LUL No. (%)

112 (15)

14 (29)

2.27

1.18–4.35

0.02

 Sample from LLL No. (%)

109 (14)

5 (10)

0.67

0.26–1.71

0.42

 Sample from > 2 lobes No. (%)

43 (6)

3 (6)

1.07

0.32–3.57

1.00

 Emphysema No. (%)

199 (27)

19 (39)

1.74

0.96–3.17

0.07

 Smoking No. (%)

412 (55)

31 (63)

1.40

0.77–2.55

0.30

  1. BMI body mass index, kg kilogram, LLL left lower lobe, LUL left upper lobe, m meter, No. number, OR Odds Ratio, RLL right lower lobe, RML right middle lobe, RUL right upper lobe; 95% CI 95% Confidence Interval