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Table 3 Area under the receiver operating characteristic curve (AUROC) for CRB-65, CURB-65 and CURSI

From: External validation of the CURSI criteria (confusion, urea, respiratory rate and shock index) in adults hospitalised for community-acquired pneumonia

Severity score AUROC 95% CI
Score points   
CRB-65 0.633 0.560–0.705
CURB-65 0.676 0.607–0.746
CURSI 0.682 0.609–0.754
Risk categories   
CRB-65 0.585 0.511–0.659
CURB-65 0.665 0.595–0.735
CURSI 0.618 0.536–0.699
  1. Definition of risk categories.
  2. CRB-65: low risk = 0 points; intermediate risk = 1–2 points; high risk = 3–4 points.
  3. CURB-65: low risk = 0–1 points; intermediate risk = 2 points; high risk = 3–5 points.
  4. CURSI: low risk = 0–1 points; high risk = 2–4 points.