ALB and pericardial effusion: The 15 statistically significant variables included age, hemoglobin, albumin, erythrocyte sedimentation rate (ESR), procalcitonin (PCT), fever, highest body temperature, number of infected pulmonary lobes, solid lesion, pulmonary cavitation, pulmonary effusion, cervical lymphadenopathy, hilar and/or mediastinal lymphadenopathy, pericardial effusion, and miliary nodules.