Table 5. Factors associated with outcome of iterative therapeutic thoracentesis.

	Univariate	Multivariate	Adjusted odds-ratio	95% CI
Age	NS	NS	–	–
Mediastinal shift	p = 0.016	NS	–	–
Positive culture on anaerobic atmosphere	p = 0.036	NS	–	–
Micro-organisms observed in pleural fluid on Gram staining	p = 0.003	p = 0.017	7.65	1.44–40.67
1st thoracentesis volume ≥450 mL	p = 0.009	p = 0.004	6.97	1.86–26.07

CI: confidence interval; NS: non-significant.