Comparison of ambulatory SSP vs non-ambulatory SSP
| Ambulatory SSP | Non-ambulatory SSP | |
| Total number of patients | 49 | 50 |
| Chest tube drainage (%) | 44 (90) | 47 (94) |
| Age, year, median (range) | 65 (21–76) | 74.5 (30–92) |
| Male, n (%) | 26 (53.1) | 38 (76) |
| Pneumothorax size: large/small | 27/22 | 32/18 |
| Resolution by day 5 (%) | 32 (65) | 32 (64) |
| Duration of drainage, days | 5.84±0.77 | 7.96±1.56 |
SSP, secondary spontaneous pneumothorax.