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Table 4 Undertriage and overtriage rates according to the definition used for appropriate triage

From: A regional trauma system to optimize the pre-hospital triage of trauma patients

ACSCOT definition

 
 

Graded

Non-graded

   
 

number

% (95% CI)

number

% (95% CI)

ARR (95% CI)

RR (95% CI)

P

Undertriagea

209

17.6 (15.4 ;19.8)

166

37.2 (32.7; 41.9)

−19.7 (−24.7; −14.7)

0.47 (0.40; 0.56)

<.001

Overtriageb

1047

76.6 (74.3; 78.8)

233

57.3 (52.3; 62.1)

+19.3 (14.0; 24.7)

1.34 (1.22; 1.46)

<.001

TRENAU definition

 
 

Graded

Non-graded

   
 

number

% (95% CI)

number

% (95% CI)

ARR (95% CI)

RR (95% CI)

P

Undertriagec

101

8.5 (7.0; 10.2)

115

25.8 (21.8; 30.1)

−17.3 (−21.7; 13.0)

0.33 (0.26; 0.42)

<.001

Overtriaged

804

58.8 (56.2; 61.4)

157

38.6 (33.8; 43.5)

+20.2 (14.8; 25.6)

1.52 (1.34; 1.74)

<.001

  1. Definition of the American College of Surgeon’s Committee on Trauma (ACSCOT): aundertriage = major trauma (ISS more than 15) admitted to trauma center level III; bovertriage = not severe trauma (ISS less than 16) admitted to trauma center level I or II.
  2. Definition of the Northern French Alps Trauma System (TRENAU): cundertriage = major trauma (ISS more than 15) admitted initially to a level III trauma center before a transfer to a level I or II; or death in a trauma center level III; dovertriage = not severe trauma (ISS less than 16) admitted to emergency room with an activation of trauma team in a level I or II trauma center. ARR: absolute risk reduction; CI: confidence interval; ISS, injury severity score; RR: relative risk.
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