Table 2. Multivariate logistic regression analysis for the prediction of malignant effusion.

Variable	OR (95% CI)	P value
HFC# (/μL)	1.002 (1.000–1.003)	0.004
HFC% (/100 WBC)	1.038 (1.018–1.057)	<0.001
CEA (ng/mL)	1.040 (1.029–1.051)	<0.001
LDH (U/L)	1.000 (0.999–1.000)	0.002
RBC (106/L)	0.999 (0.999–1.000)	0.997