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Table 3 Measures for dispatch accuracy per included study

From: The accuracy of medical dispatch - a systematic review

Category Author, year Sensitivity % (95% CI) Specificity % (95% CI) PPV % (95% CI) NPV % (95% CI) Over-triage % (95% CI) Under-triage % (95% CI)
Stroke Clawson et al., 2016 86.4 26.6 20.0 90.2   
Dami et al., 2017 67.8 (54.3–79.4) 98.6 (98.4–98.7) 9.4 (6.6–12. 99.9 (99.9–99.9)   
Malekzadeh et al., 2015      11.6 vs 20.8 10.7 vs 13.6
Krebes et al., 2012 Stroke: 53.3 (47.0–59.0) 97 (97–98) Stroke: 47.8 (42.0–54.0) 98 (97–98)   
Viereck et al., 2016 66.2 (64.4–68.0)   30.2 (29.1–31.4)    
Cardiac arrest Deakin et al., 2017 75.9 (74.3–77.3) 98.6 (98.6–98.7) 26.8 (25.88–27.7) 99.8 (99.82–99.85)   
Möller et al., 2016 Copenhagen 80.7 (77.7–84.3), Skåne 86.0 (81.3–89.8)      
Fukushima et al., 2015 93 50     
Tanaka et al., 2014 72.9 (71.7–74.1) 99.6 (99.6–99.6)     
Vaillancourt et al., 2015 65.9 (63.5–68.2) 32.3 (29.0–35.9) 67.4 30.9   
Acute coronary syndrome Gellerstedt et al., 2016 82.6      
Major trauma Giannokopoulos et al., 2012 87.7 45.3 48.4 86.3 44 20.6
Wilmer et al., 2015 MOI + INT: 80.2     MOI: 41.2 REQ/all: 19.7
INT: 30.2
REQ: 27.7
Medical priority Ball et al., 2016 93.32 (92.71–93.89) 48.6 (48.45–48.89)     
Dami et al., 2015 86 (85.6–86.4) 48 (47.4–48.6) 21.7 (21.2–22-2) 95.4 (95.2–95.6) 78 4.6
Ek et al., 2013 93.32 15.4     
Leopardi et al., 2013 78.0 (76.9–79.1) 83.8 (83.4–84.1) 36.6 (35.8–37.5) 96.9 (96.8–97.1)   
Moser et al., 2017 A + B 86.8 (86.5–87.1) A + B 67.4 (66.9–67.9) 29.2 (28.7–29.7) 97.0 (70.3–71.3) After 70.8 (70.3–71.3) After 3.0 (2.8–3.2)
  1. CI Confidence Interval, DPCI Dispatch Priority Card Index, HEMS Helicopter Emergency Medical Service, INT Paramedic interrogation of caller, MPDS Medical Priority Dispatch System, MOI Mechanism of injury, NHS National Health System, NPV Negative Predicted Value, PPV Positive Predicted Value, REQ Land ambulance request