Skip to main content

Table 2 Test performance criteria results by study participant characteristics

From: Evaluation of a novel algorithm for primary mass casualty triage by paramedics in a physician manned EMS system: a dummy based trial

   Professional education (staffing) Employment status Previous mSTaRT training  
  Whole collective Mobile intensive care units Patient transport ambulance Disaster response teams Career teams Volunteer teams Yes No MSTaRT [[14]]
(n = 780) (n = 420) (n = 40) (n = 100) (n = 480) (n = 140) (n = 220) (n = 160)  
Test performance criteria
Correct triage 83.9% 85.2% 90.0% 88.0% 84.3% 87.9% 88.6% 83.8% 84.8%
(81.3 – 86.5) (81.8 - 88.6) (81.8 - 100.0) (81.6 - 93.8) (81.1 – 87.3) (82.1 - 93.1) (84.2 - 92.8) (77.9 - 89.3) (78.7 - 91.0)
Sensitivity 87.4% 89.2% 100.0% 90.0% 88.3% 91.3% 93.8% 86.8% 88.2%
(83.7 – 90.9) (84.7 - 93.6)   (81.0 - 97.9) (83.6 – 92.5) (84.5 - 97.2) (88.5 - 97.8) (78.7 - 93.9) (73.4 - 95.3)
Specificity 91.0% 89.6% 92.3% 95.6% 90.2% 95.4% 90.7% 93.6% 93.9%
(88.1 – 93.8) (85.0 - 93.6) (81.0 - 100.0) (88.6 - 100.0) (86.1 - 93.6) (89.9 - 100.0) (85.1 - 95.7) (87.7 - 98.7) (87.3 - 97.2)
LR + 9.7 8.6 13.0 19.1 9.01 19.8 10.1 13.6 14.5
LR - 0.139 0.121 0.000 0.105 0.130 0.091 0.068 0.141 0.126
Over-triage 6.4% 6.9% 7.5% 6.0% 6.3% 6.4% 6.8% 6.3% 8.3%
(4.9 – 8.1) (4.9 - 8.1) (0.0 - 16.7) (1.9 - 10.9) (4.3 – 8.6) (2.9 - 10.6) (3.9 - 10.2) (2.7 - 10.6) (3.6 - 13.0)
Critical over-triage 4.4% 4.4% 5.0% 2.0% 4.8% 2.1% 4.5% 3.1% 5.3%
(3.0 – 5.8) (3.0 - 5.8) (0.0 - 13.5) (0.0 - 5.1) (3.0 – 6.8) (0.0 - 4.8) (2.2 - 7.5) (0.6 -6.2) (1.5 - 9.1)
Under-triage 9.7% 9.7% 2.5% 6.0% 9.4% 5.7% 4.5%* 10.0%* 6.8%
(7.7 – 11.8) (7.7 - 11.8) (0.0 - 8.3) (1.9 - 10.7) (6.9 – 12.2) (2.2 - 10.1) (2.0 - 7.5) (5.6 - 14.9) (2.5 - 11.1)
Critical under-triage 4.8% 4.8% 0.0% 5.0 4.2% 2.1% 2.7% 6.3% 3.0%
(3.3 – 6.3) (3.0 - 4.8)   (1.0 - 9.4) (2.4 – 6.2) (1.4 - 7.9) (0.9 - 5.0) (2.9 - 10.1) (0.1 - 6.0)
Bleeding control 93.1% 92.4% 82.5% 93.0% 90.8% 92.1% 89.5%† 93.8%† -
(91.3 - 94.7) (89.7 - 94.8) (69.4 - 93.8) (87.4 - 97.6) (88.0 - 93.3) (87.3 - 96.1) (85.1 - 93.1) (89.7 - 97.4)  
Airway opening 90.0% 82.9% 85.0% 84.0% 82.4% 83.6% 80.0% 83.1% -
(87.9 - 92.1) (79.4 - 86.3) (72.7 - 95.6) (76.5 - 90.9) (79.0 - 85.5) (77.3 - 89.4) (74.4 - 85.2) (77.3 - 89.0)  
  1. Values in parenthesis represent the 95% confidence interval. *,†: P < 0.05 (ANOVA).