Table 4: Comparison of the clinical findings based on the presence of cystic lesion (n = 125).
| Bulla (-) | Bulla (+) | p-value* | Single | Multiple | p-value** | |
| Cases, n | 51 | 74 | 10 | 64 | ||
| Male/Female, n (%) | 42/9 (82/18) | 68/6 (92/8) | p = 0.1092 | 8/2 (80/20) | 60/4 (94/6) | p = 1.46 |
| Age in years | 38.8 ± 22.3 | 30.3 ± 12.7 | p = 0.118 | 30.2 ± 17.7 | 30.3 ± 12.0 | p = 0.47 |
| Initial/Recurrence n (%) | 47/4 (92/8) | 56/18 (76/24) | p = 0.018* | 4/6 (40/60) | 52/12 (81/19) | p = 0.005** |
| Smoking never/former n (%) | 35/16 (69/31) | 41/33 (55/45) | p = 0.139 | 6/4 (60/40) | 35/29 (55/45) | p = 0.30 |
| Collapse rate, % | 33.2 ± 17.0 | 56.9 ± 20.3* | p = 0.008* | 39.7 ± 16.0 | 43.6 ± 21.0 | p = 0.82 |
| Chest drainage, n (%) Aspiration (+)/(-) | 23 (45) 6/17 (26/74) | 53 (72) 22/31 (42/58) | p = 0.003* | 7 (70) | 46 (73) | p = 0.91 |
| Treatment period (days) | 6.6 ± 4.4 | 6.8 ± 3.1 | p = 0.172 | 6.6 ± 3.8 | 6.9 ± 3.0 | p = 0.62 |
| Surgical treatment n (%) | 3 (5.88) | 37 (51) | p < 0.001* | 3 (30) | 31 (49) | p = 0.28 |
Data are presented as mean ± SD.
*Bulla (+) vs. Bulla (-); **Single vs. multiple.