Table 1. Comparison of subgroups with and without follow-up.
| All pts | Pts without follow-up | Pts with follow-up | p | |
|---|---|---|---|---|
| N | 607 | 328 | 279 | |
| Demographic characteristics | ||||
| Age, y, mean (SD) | 37.4 (16.1) | 37.7 (16.9) | 37.2 (15.2) | 0.93 |
| Female sex, n (%) | 162 (26.7) | 76 (23.2) | 86 (30.8) | 0.10 |
| Disease characteristics | ||||
| First manifestation PNTX , n (%) | 168 (27.7) | 106 (32.3) | 62 (22.2) | 0.02* |
| Number of recurrences of recurrent PNTX, mean (SD) | 1.4 (0.7) | 1.3 (0.6) | 1.5 (0.8) | 0.07 |
| In-hospital treatment results | ||||
| Perioperative complications, n (%) | 55 (9.1) | 30 (9.1) | 25 (9.0) | >0.99 |
| Postoperative hospital stay, d, mean (SD) | 11.9 (7.6) | 12.9 (8.9) | 10.1 (5.3) | 0.02* |
*Statistically significant. PNTX: pneumothorax; Pts: patients; y: years; d: days; SD: standard deviation