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Table 4 Diagnostic accuracy per country and system in the first round compared to TTT in the second round

From: The implication of a translational triage tool in mass casualty incidents: part three: a multinational study, using validated patient cards

Country

System

Sensitivity

Specificity

Accuracy

PPV

NPV

Over-triage (1-PPV)2

Under-triage (1-Sens)3

LR+ 

LR−

A

START

0.975

0.775

0.855

0.743

0.979

0.257

0.025

4.333

0.032

  

[0.913,0.993]1

[0.692,0.841]

[0.8, 0.897]

[0.652,0.817]

[0.926,0.994]

[0.183,0.348]

[0.007,0.087]

[3.103,6.051]

[0.008,0.127]

A

TTT

1

0.667

0.8

0.667

1

0.333

0

3

0

  

[0.954,1]

[0.578,0.745]

[0.739,0.85]

[0.578,0.745]

[0.954,1]

[0.255,0.422]

[0,0.046]

[2.329,3.864]

[0,0.149]

B

START

0.812

0.729

0.762

0.667

0.854

0.333

0.188

3

0.257

  

[0.647,0.911]

[0.59,0.834]

[0.659,0.842]

[0.51,0.794]

[0.716,0.931]

[0.206,0.49]

[0.089,0.353]

[1.832,4.912]

[0.122,0.54]

B

TTT

1

0.625

0.775

0.64

1

0.36

0

2.667

0

  

[0.893,1]

[0.484,0.748]

[0.672,0.853]

[0.501,0.759]

[0.886,1]

[0.241,0.499]

[0,0.107]

[1.851,3.842]

[0,0.395]

C

SIEVE

1

0.911

0.947

0.882

1

0.118

0

11.25

0

  

[0.886,1]

[0.793,0.965]

[0.871,0.979]

[0.734,0.953]

[0.914,1]

[0.047,0.266]

[0,0.114]

[4.415,28.668]

[0,0.286]

C

TTT

1

0.578

0.747

0.612

1

0.388

0

2.368

0

  

[0.886,1]

[0.433,0.71]

[0.638,0.831]

[0.472,0.736]

[0.871,1]

[0.264,0.528]

[0,0.114]

[1.683,3.333]

[0,0.456]

D

SIEVE

0.984

0.656

0.787

0.656

0.984

0.344

0.016

2.859

0.025

  

[0.914,0.997]

[0.555,0.745]

[0.716,0.844]

[0.555,0.745]

[0.914,0.997]

[0.255,0.445]

[0.003,0.086]

[2.156,3.792]

[0.003,0.173]

D

TTT

1

0.258

0.555

0.473

1

0.527

0

1.348

0

  

[0.942,1]

[0.18,0.355]

[0.476,0.631]

[0.39,0.558]

[0.862,1]

[0.442,0.61]

[0,0.058]

[1.196,1.519]

[0,0.505]

E

MIXED

0.739

0.333

0.496

0.425

0.657

0.575

0.261

1.109

0.783

  

[0.597,0.844]

[0.234,0.451]

[0.406,0.586]

[0.323,0.534]

[0.492,0.792]

[0.466,0.677]

[0.156,0.403]

[0.873,1.409]

[0.434,1.412]

E

TTT

0.909

0.47

0.645

0.533

0.886

0.467

0.091

1.714

0.194

  

[0.788,0.964]

[0.354,0.588]

[0.553,0.729]

[0.422,0.642]

[0.74,0.955]

[0.358,0.578]

[0.036,0.212]

[1.341,2.191]

[0.073,0.51]

F

MIXED

0.769

0.692

0.723

0.625

0.818

0.375

0.231

2.5

0.333

  

[0.579,0.89]

[0.536,0.814]

[0.604,0.817]

[0.453,0.771]

[0.656,0.914]

[0.229,0.547]

[0.11,0.421]

[1.493,4.187]

[0.16,0.693]

F

TTT

1

0.487

0.692

0.565

1

0.435

0

1.95

0

  

[0.871,1]

[0.339,0.638]

[0.572,0.791]

[0.422,0.698]

[0.832,1]

[0.302,0.578]

[0,0.129]

[1.436,2.648]

[0,0.626]

G

SIEVE

1

0.733

0.84

0.714

1

0.286

0

3.75

0

  

[0.839,1]

[0.556,0.858]

[0.715,0.917]

[0.529,0.847]

[0.851,1]

[0.153,0.471]

[0,0.161]

[2.072,6.788]

[0,0.531]

G

TTT

1

0.4

0.64

0.526

1

0.474

0

1.667

0

  

[0.839,1]

[0.246,0.577]

[0.501,0.759]

[0.373,0.675]

[0.758,1]

[0.325,0.627]

[0,0.161]

[1.244,2.232]

[0,0.999]

H

MIXED

0.9

0.6

0.72

0.6

0.9

0.4

0.1

2.25

0.167

  

[0.699,0.972]

[0.423,0.754]

[0.583,0.825]

[0.423,0.754]

[0.699,0.972]

[0.246,0.577]

[0.028,0.301]

[1.418,3.571]

[0.043,0.641]

H

TTT

1

0.533

0.72

0.588

1

0.412

0

2.143

0

  

[0.839,1]

[0.361,0.698]

[0.583,0.825]

[0.422,0.736]

[0.806,1]

[0.264,0.578]

[0,0.161]

[1.462,3.141]

[0,0.739]

  1. PPV positive predictive value, NPV negative predictive value, LR+ positive likelihood ratio, LR− negative likelihood ratio
  2. 195%—Confidence intervals
  3. 2Over-triage calculated as 1-Positive predictive value according to the Cribari matrix
  4. 3Under-triage calculated as 1- Sensitivity according to the Cribari matrix