Primary diagnosis | Total n = 269 (No., %) | Control group air leak < 5 days n = 238 (No., %) | Air leak ≥ 5 days n = 31 (No., %) | P-value* |
Lung cancer | 165 (61.34) | 141 (59.24) | 24 (77.42) | 0.056 |
Lung metastases | 31 (11.52) | 31 (13.03) | 0 | |
Recurrent pneumothorax | 25 (9.29) | 22 (9.24) | 3 (9.68) | |
ILD | 18 (6.69) | 18 (7.56) | 0 | |
Other (Benign lung lesions, infection) | 30 (11.15) | 26 (10.92) | 4 (12.90) |