Study Cohort Number % of Total
Gender    
Male 27 67.5
Female 13 32.5
Age    
<18 10 25
>18 30 75
Etiology    
Parapneumonic 35 87.5
Effusion    
Surgery 3 7.5
Trauma 2 5
Table 1: Demographic and clinical description of empyema patients subjected to chest-tube drainage.