Table 4

Test characteristics with 95% Confidence Intervals

ModelSensitivitySpecificityPPVNPVUndertriage
(1-sensitivity)
Overtriage
(1-PPV)
MPTT57.6% (56.9–58.2%)71.5% (71.2–71.8%)32.9% (32.4–33.3%)87.4% (87.2–87.7%)42.4% (41.8–43.0%)67.1% (66.5–67.7%)
Military Sieve28.0% (27.5–28.6%)94.1% (93.9–94.2%)53.3% (52.5–54.2%)84.4% (84.2–84.6%)72.0% (71.4–72.6%)46.7% (56.1–57.3%)
Triage Sieve12.9% (12.5–13.4%)96.7% (96.5–96.8%)48.4% (47.2– 49.6%)82.1% (81.9–82.3%)87.1% (86.7–87.5%)51.6% (51.0–52.2%)
START28.8% (28.2–29.4%)94.3% (94.2–94.4%)55.0% (54.2–55.9%)84.6% (84.3–84.8%)71.2% (70.6–71.8%)45.0% (44.4–45.6%)
Careflight23.6% (23.1–24.1%)95.9% (95.7–96.0%)57.9% (57.0–58.9%)83.8% (83.6–84.0%)76.4% (75.9–76.9%)42.1% (41.5–42.7%)
  • MPTT: 12<RR>22, HR>100, GCS<14; Military Sieve: 10<RR>30, HR>120, GCS<13; Triage Sieve: 10<RR>30, HR>120;

  • START: RR>30, SBP<90, GCS<13;Careflight: SBP<90, GCS<13.

  • MPTT, Modified Physiological Triage Tool; NPV, negative predictive value; PPV, positive predictive value; SBP, systolic blood pressure.