| Group A | Group B | P value | ||
---|---|---|---|---|---|
 N |  |  N |  | ||
 |   135 | 30.34% |    310 | 69.66% |  |
Inpatient/Outpatient (N) | 72/63 | Â | Â | 84/226 | 0.0001 |
Male/Female (N) | 75/60 | 177/133 | 0.843 | ||
Age (mean) (range) | 70.9 (19-87) | 71 (18-88) | 0.916 | ||
Final diagnosis | N (%) | Â | Â | ||
Lung cancer | 70 (51.86) | 125 (40.32) | 0.031 | ||
Breast cancer | 56 (41.48) | 119 (38.39) | 0.610 | ||
Gastrointestinal cancer | 4 (2.96) | 31 (10) | 0.019 | ||
Other | 5 (3.70) | 35 (11.29) | 0.017 | ||
Diagnostic thoracentesis | 7 (5.19) | 35 (11.29) | 0.064 | ||
Therapeutic thoracentesis | 103 (76.30) | 199 (64.19) | 0.016 | ||
Diagnostic and therapeutic thoracentesis | 25 (18.51) | 76 (24.52) | 0.206 | ||
Volume of pleural fluid removed (mL) | Â | Â | Â | ||
Median (range) | 750 40-1,700 | 1100 70-2,300 | 0.447 |