CURB-65 Pneumonia Severity Score

Calculate CURB-65 score for community-acquired pneumonia. 1 point each for: Confusion (new), Urea > 7 mmol/L, Respiratory rate >= 30/min, Blood pressure < 90 systolic or <= 60 diastolic, Age >= 65. Score 0-1: low risk; 2: intermediate; 3-5: severe.