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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