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Table 1 Basic characteristics of the study cohort (n = 796)

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

Age (years) 63 ± 13
Male No. (%) 461 (58)
BMI (kg/m2) 28 ± 14
No of samples ≥4 No. (%) 199 (25)
PTX No. (%) 49 (6)
Indication to TBB
 Nodular lesion (suspicion of tumour) No. (%) 385 (48)
 Diffuse lung disease (suspicion of pulmonary fibrosis) No. (%) 187 (24)
 Infiltrates of unknown etiology No. (%) 165 (21)
 Other No. (%) 59 (7)
Sampling location (pulmonary lobe)
 Sample from RUL No. (%) 136 (17)
 Sample from RML No. (%) 122 (15)
 Sample from RLL No. (%) 252 (32)
 Sample from LUL No. (%) 126 (16)
 Sample from LLL No. (%) 114 (14)
 Sample from > 2 lobes No. (%) 46 (6)
 Emphysema on lung CT or CXR No. (%) 218 (27)
 Smoking No. (%) 443 (55)
  1. BMI body mass index, CT computed tomography, CXR chest radiograph, kg kilogram, LLL left lower lobe, LUL left upper lobe, m meter, No. number, RLL right lower lobe, RML right middle lobe, RUL right upper lobe