Table 2

Triage tool diagnostic accuracy statistics (95% CI) for predicting any adverse outcome

ToolN*n (%) adverse outcome†C-statisticThresholdn (%) above thresholdSensitivitySpecificityPPVNPV
CRB-6574691315 (18)0.79
(0.78 to 0.80)
>04010 (54)0.89
(0.88 to 0.89)
0.54
(0.53 to 0.54)
0.29
(0.29 to 0.30)
0.96
(0.95 to 0.96)
NEWS274331315 (18)0.80
(0.78 to 0.81)
>15574 (75)0.96
(0.96 to 0.96)
0.30
(0.29 to 0.30)
0.23
(0.22 to 0.23)
0.97
(0.97 to 0.97)
PMEWS74601315 (18)0.81
(0.80 to 0.83)
>25352 (72)0.98
(0.97 to 0.98)
0.34
(0.33 to 0.34)
0.24
(0.24 to 0.24)
0.99
(0.98 to 0.99)
PRIEST74711315 (18)0.83
(0.82 to 0.84)
>44932 (66)0.97
(0.97 to 0.97)
0.41
(0.40 to 0.41)
0.26
(0.25 to 0.26)
0.98
(0.98 to 0.99)
WHO74711315 (18)0.64
(0.64 to 0.65)
>05539 (74)0.98
(0.97 to 0.98)
0.31
(0.30 to 0.31)
0.23
(0.23 to 0.24)
0.98
(0.98 to 0.99)
  • *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.