Parsimonious multivariate model of potential predictors of treatment failure
| Covariant | OR | 95% CI | P value |
|---|---|---|---|
| Drainage and fibrinolysis | Standard for comparison | ||
| Drainage alone | 3.04 | 1.47–6.27 | 0.003* |
| Video-assisted thoracoscopic surgery | 1.14 | 0.32–3.20 | 0.821 |
| Decortication | 1.53 X 10–7 | N/A1 | 0.987 |
| Other procedure | 1.53 X 10–7 | N/A1 | 0.987 |
OR = Odds ratio CI = Confidence interval *p-value > 0.05 1N/A 95% CI values were too small to compute