Outcomes of interest with 95% CIs
| Outcome measure | Group; no. (and %) | Observed difference, % (95% CI) | |
|---|---|---|---|
| Group 1 (chest tube) (n = 18) | Group 2 (observation) (n = 21) | ||
| Respiratory distress | 1 (5.5) | 3 (14.2) | 8.7 (18.2) |
| Pneumothorax progression | 4 (22.2) | 3 (14.2) | 8.0 (24.3) |
| Pneumonia | 2 (11.1) | 0 (0) | 1.1 (14.7) |
| Retained hemothorax | 0 (0) | 1 (4.8) | 4.8 (9.1) |
| Chest tube insertion | 4 (22.2) | 2 (9.5) | 12.7 (22.9) |
CI = confidence interval.