Relation of hydropneumothorax on postdrainage chest radiograph with pleurodesis
| Degree of lung expansion, % | No. (%) of catheters with pleurodesis | p value* |
|---|---|---|
| > 80 (n = 71) | 47 (66) | < 0.001 |
| 51–80 (n = 94) | 37 (39) | 0.6 |
| 30–50 (n = 39) | 8 (20) | 0.006 |
| < 30 (n = 24) | 4 (17) | 0.01 |
↵* For comparison with all other inserted catheters; χ2 test.