TABLE 3

Performance Characteristics of PEWS and SSO

Risk Assessment ToolSensitivitySpecificityPositive Predictive ValueNegative Predictive ValueFalse-Positive RateFalse-Negative Rate% Correctly Classified
PEWS ≥380436167572063
PEWS ≥535766251246555
SSO43706152305756
PEWS ≥3 + SSOa86355970651462
PEWS ≥5 + SSOa67556360433362
  • a Patient is considered to be at risk if either screening tool is positive.