Table 3

Triage tool diagnostic accuracy statistics (95% CI) for predicting death within 30 days

ToolN*n (%) 30 days of death†C-statisticThresholdn (%) above thresholdSensitivitySpecificityPPVNPV
CRB-6574691055 (14)0.84 (0.83 to 0.85)>04010 (54)0.95 (0.95 to 0.96)0.53 (0.53 to 0.54)0.25 (0.25 to 0.26)0.99 (0.98 to 0.99)
NEWS274331055 (14)0.78 (0.77 to 0.80)>15574 (75)0.95 (0.95 to 0.96)0.28 (0.28 to 0.29)0.18 (0.18 to 0.18)0.97 (0.97 to 0.98)
PMEWS74601050 (14)0.81 (0.80 to 0.83)>25352 (72)0.98 (0.98 to 0.98)0.32 (0.32 to 0.33)0.19 (0.19 to 0.20)0.99 (0.99 to 0.99)
PRIEST74711055 (14)0.85 (0.84 to 0.86)>44932 (66)0.98 (0.97 to 0.98)0.39 (0.39 to 0.40)0.21 (0.20 to 0.21)0.99 (0.99 to 0.99)
WHO74711055 (14)0.65 (0.64 to 0.65)>05539 (74)0.99 (0.99 to 1.00)0.30 (0.30 to 0.30)0.19 (0.19 to 0.19)1.00 (1.00 to 1.00)
  • *Patients with less than three parameters were excluded from analysis when estimating performance.

  • †Totals rounded to nearest 5.

  • NEWS2, National Early Warning Score, version 2; NPV, negative predictive value; PPV, positive predictive value.