Table 1.

Attributes of the PORT dataset.

Target attribute: Hospitalization Demographic factors Age > 50 Gender (male, female) Co-existing illnesses: Congestive heart failure Cerebrovascular disease Neoplastic disease Renal disease Liver disease

Physical-examination: Pulse ≥125 per min Respiratory rate ≥ 30 per min Sys. blood pressure < 90mm Hg Temperature < 35C or > 40C Lab. & radiograph. findings: Blood urea nitrogen ≥ 30 mg/dl Glucose ≥ 250 mg / dl Hematocrit < 30 % Sodium < 130 mmol / l Art. O2. pressure < 60 mm Hg Arterial pH < 7.35 Pleural effusion