Table 1.

CURB-65 scoring system.

Clinical feature	Points
Confusion	1
Urea > 7 mmol/L	1
Respiratory rate ≥ 30	1
Systolic blood pressure ≤ 90 mmHg or diastolic blood pressure ≤ 60 mmHg	1
Age over 65 years	1

CURB-65 score	Risk
0–1	Low risk
≥ 2	Moderate and high risk