In CURB-65, 1 point is allotted for each of the following risk factors: C onfusion U remia (BUN ≥19 mg / dL [6.8 mmol / L]) R espiratory rate > 30 breaths / minute Systolic B lood pressure < 90 mm Hg or diastolic blood pressure ≤ 60 mm Hg Age ≥ 65 years Scores can be used as follows: 0 or 1 points: Risk of death is < 3%.