Table 1: Point scoring system by Fine et al. [32] to assign the different risk classes of PSI.

DemographicsPoints assigned

If male+Age (yr)
If female+Age (yr) − 10
Nursing home resident+10
Comorbidity
 Neoplastic disease+30
 Liver disease+20
 Congestive heart failure+10
 Cerebrovascular disease+10
 Renal disease+10
Physical exam findings
 Altered mental status+20
 Pulse ≥ 125/minute+20
 Respiratory rate > 30/minute+20
 Systolic blood pressure < 90mm Hg+15
 Temperature < 35°C or ≥40°C+10
Lab and radiographic findings
 Arterial pH < 7.35+30
 Blood urea nitrogen ≥ 30 mg/dL (9 mmol/liter)+20
 Sodium < 130 mmol/liter+20
 Glucose ≥ 250 mg/dL (14 mmol/liter)+10
 Hematocrit < 30%+10
 Partial pressure of arterial O2 < 60 mm Hg+10
 Pleural effusion+10

<70 = risk class II
71–90 = risk class III
91–130 = risk class IV
>130 = risk class V