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Table 4 External validations of multimodal TOR rules for predicting death prior to discharge (n = 170)

From: External validation of multimodal termination of resuscitation rules for out-of-hospital cardiac arrest patients in the COVID-19 era

TOR rules Death Survival Sensitivity
(95% CI)
Specificity
(95% CI)
FPV
(95% CI)
PPV
(95% CI)
NPV
(95% CI)
Before arriving at the ED
 International BLS-TOR met all criteria 121 1 74.2% 85.7% 0.8% 99.2% 12.5%
did not fulfill 42 6 (66.7–80.6) (42.0–99.2) (0.04–5.2) (84.8–99.9) (5.2–25.9)
 Goto’s rule met all criteria 58 0 35.6% 100% 0% 100% 6.3%
did not fulfill 105 7 (28.4–43.5) (56.1–100) (0–7.7) (92.3–100) (2.8–12.9)
 KoCARC TOR rule I met all criteria 93 0 57.1% 100% 0% 100% 9.1%
did not fulfill 70 7 (49.1–64.7) (56.1–100) (0–4.9) (95.1–100) (4.0–18.4)
 KoCARC TOR rule II met all criteria 97 1 56.5% 85.7% 1.0% 98.9% 8.3%
did not fulfill 66 6 (51.5–67.0) (42.0–99.2) (0.05–6.4) (93.6–99.9) (3.4–17.9)
 KoCARC TOR rule III met all criteria 78 0 47.9% 100% 0% 100% 7.6%
did not fulfill 85 7 (40.0–55.8) (56.1–100) (0–5.8) (94.2–100) (3.4–15.6)
 New TOR Model 1 met all criteria 35 0 21.5% 100% 0% 100% 5.2%
did not fulfill 128 7 (15.6–28.7) (56.1–100) (0–12.3) (87.7–100) (2.3–10.8)
After ED arrival
 International ALS TOR met all criteria 23 0 14.1% 100% 0 100% 4.8%
did not fulfill 140 7 (9.3–20.6) (56.1–100) (0–17.8) (82.2–100) (2.1–9.9)
 SOS-KANTO’s rule met all criteria 33 0 20.2% 100% 0% 100% 5.2%
did not fulfill 130 7 (14.5–27.4) (56.1–100) (0–12.9) (87.0–100) (2.3–10.6)
 New TOR Model 2 met all criteria 45 0 27.6% 100% 0% 100% 5.6%
did not fulfill 118 7 (21.0–35.2) (56.1–100) (0–9.7) (90.2–100) (2.4–11.6)
  1. ALS advanced life support, BLS-TOR basic life support and termination of resuscitation, CI confidence interval, ED emergency department, FPV false positive value, KoCARC Korean Cardiac Arrest Research Consortium in 2015–2017; NPV negative predictive value, PPV positive predictive value, SOS-KANTO survey of survivors after cardiac arrest conducted in the Kanto area in 2012 (2017)