Skip to main content

Table 3 Injury severity and trauma team activation (TTA)

From: Calculating trauma triage precision: effects of different definitions of major trauma

  Major trauma Non-major trauma Total
TTA a b a + b
No TTA c d c + d
Total a + c b + d n
  1. Sensitivity = a/(a + c); Specificity = d/(b + d); Positive predictive value (PPV) = a/(a + b).
  2. Undertriage = 1-Sensitivity = c/(a + c); Overtriage = 1-PPV = b/(a + b).
Back to article page

Journal of Trauma Management & Outcomes

ISSN: 1752-2897

Contact us