Table 3. Estimated Performance of TOR Rule Use at Different Prevalence Ratesa.
| TOR rule, % survival | Discontinue, %b | Discontinue decision, %c | Miss, %d | Miss frequencye | Transport, %f | Transport decision, %g | Survivor, %h | Survivor frequencyi | Futile transport, %j | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Correct | Incorrect | Correct | Incorrect | ||||||||
| BLS | |||||||||||
| 8 | 65.9 (63.5-69.4) | 97.3 (96.4-98.2) | 2.7 (1.8-3.6) | 1.8 (1.2-2.3) | 56 (44-82) | 34.1 (30.6-36.5) | 18.2 (16.2-21.1) | 81.8 (78.9-83.8) | 6.2 (5.9-6.5) | 16.1 (15.5-16.9) | 28 (24-31) |
| 10 | 65.0 (62.7-68.3) | 96.5 (95.4-97.9) | 3.5 (2.1-4.6) | 2.3 (1.5-2.9) | 44 (35-68) | 35.0 (31.7-37.3) | 22.0 (20.0-25.5) | 78.0 (74.5-80.0) | 7.7 (7.4-8.1) | 13.0 (12.4-13.4) | 27 (24-30) |
| 12 | 64.1 (61.9-67.7) | 95.6 (94.4-97.4) | 4.4 (2.6-5.6) | 2.8 (1.7-3.5) | 36 (29-58) | 35.9 (32.8-38.1) | 25.6 (23.5-29.5) | 74.4 (70.5-76.5) | 9.2 (9.0-9.7) | 10.9 (10.3-11.2) | 27 (23-29) |
| UTOR | |||||||||||
| 8 | 58.4 (57.3-60.1) | 98.3(97.8-99.0) | 1.7 (1.0-2.2) | 1.0 (0.6-1.3) | 100 (167-78) | 41.6 (39.9-42.7) | 16.8 (15.1-19.5) | 83.2 (80.5-84.9) | 7.0 (6.4-7.8) | 14 (13-16) | 35 (32-36) |
| 10 | 57.4 (56.4-58.9) | 97.9 (97.1-98.8) | 2.1 (1.2-2.9) | 1.2 (0.7-1.6) | 83 (61-139) | 42.6 (41.1-43.6) | 20.7 (18.5-23.6) | 79.3 (76.4-81.5) | 8.8 (8.1-9.7) | 11 (10-12) | 34 (31-36) |
| 12 | 56.4 (55.5-57.7) | 97.3 (96.6-98.5) | 2.7 (1.5-3.4) | 1.5 (0.8-1.9) | 67 (53-119) | 43.6 (42.3-44.5) | 24.1 (21.8-27.7) | 75.9 (72.3-78.2) | 10.5 (9.7-11.7) | 9.5 (8.5-10.3) | 33 (31-35) |
| ALS | |||||||||||
| 8 | 23.9 (20.7-26.6) | 98.7 (98.3-99.5) | 1.3 (0.5-1.7) | 0.3 (0.1-0.5) | 333 (222-889) | 76.1 (73.4-79.3) | 10.1 (9.7-10.6) | 89.8 (89.4-90.3) | 7.7 (7.1-8.4) | 13 (12-14) | 68 (66-71) |
| 10 | 23.5 (20.2-23.5) | 98.3 (97.6-99.4) | 1.7 (0.6-2.4) | 0.4 (0.1-0.6) | 250 (159-890) | 76.5 (73.9-79.8) | 12.5 (12.1-13.1) | 87.5 (86.9-87.9) | 9.6 (8.9-10.4) | 10.4 (9.6-11.2) | 67 (65-69) |
| 12 | 23.1 (19.8-25.7) | 97.8 (97.2-99.4) | 2.2 (0.6-2.8) | 0.5 (0.1-0.7) | 22 (139-891) | 76.9 (74.3-80.2) | 15.0 (14.4-15.7) | 85.0 (84.3-85.6) | 11.5 (10.7-12.6) | 8.7 (8.0-9.3) | 65 (64-68) |
| Marsden | |||||||||||
| 8 | 39.0 (0.1-44.6) | 99.2 (50.0-98.9) | 0.8 (1.1-50.0) | 0.3 (0.1-0.5) | 333 (200-1962) | 61.0 (55.4-99.9) | 12.6 (8.0-36.2) | 87.4 (63.8-92.0) | 7.7 (4.4-36.2) | 13.0 (2.8-22.6) | 53 (51-64) |
| 10 | 38.1 (0.1-44.1) | 99.2 (98.9-1.0) | 0.8 (0-1.1) | 0.3 (0-0.6) | 333 (163-2111) | 61.9 (55.9-100) | 15.7 (10.0-42.2) | 84.3 (57.8-90.0) | 9.7 (5.6-42.2) | 10.3 (2.4-17.9) | 52 (50-58) |
| 12 | 37.4 (0.1-43.6) | 98.9 (98.3-1.0) | 1.1 (0-1.7) | 0.4 (0-0.7) | 250 (136-2271) | 62.6 (56.4-100) | 18.5 (12.0-47.1) | 81.5 (52.9-88.0) | 11.6 (6.8-47.1) | 8.6 (2.1-14.8) | 51 (50-53) |
| Petrie | |||||||||||
| 8 | 19.4 (0-28.5) | 99.5 (98.5-1.0) | 0.5 (0-1.5) | 0.1 (0-0.4) | 1000(233-5811) | 80.6 (71.5-100) | 9.8 (8.0-12.3) | 90.2 (92.0-87.7) | 7.9 (5.7-12.3) | 12.7 (8.1-17.5) | 73 (66-88) |
| 10 | 19.0 (0-28.1) | 98.9 (98.2-1.0) | 1.1 (0-1.8) | 0.2 (0-0.5) | 500 (198-6102) | 81.0 (71.9-100) | 12.1 (10.0-15.2) | 87.9 (84.8-90.0) | 9.8 (7.2-15.2) | 10.2 (6.6-13.9) | 71 (65-85) |
| 12 | 18.6 (0-27.7) | 98.9 (97.9-1.0) | 1.1 (0-2.1) | 0.2 (0-0.6) | 500 (173-6171) | 81.4 (72.3-100) | 14.5 (12.0-18.2) | 85.5 (81.8-88.0) | 11.8 (8.7-18.1) | 8.5 (5.5-11.5) | 70 (64-82) |
| Goto 1 | |||||||||||
| 8 | 43.2 (40.6-44.6) | 98.6 (98.6-99.0) | 1.4 (1.0-1.4) | 0.6 (0.4-0.6) | 167 (159-242) | 56.8 (55.4-59.4) | 13.0 (10.9-16.7) | 87.0 (83.3-89.1) | 7.4 (6.0-9.9) | 13.5 (10.1-16.6) | 49 (49-50) |
| 10 | 42.4 (39.4-43.9) | 98.3 (98.2-99.0) | 1.7 (1.0-1.8) | 0.7 (0.4-0.8) | 143 (127-243) | 57.6 (56.1-60.6) | 16.1 (13.6-20.4) | 83.9 (79.6-86.4) | 9.3 (7.6-12.4) | 10.8 (8.1-13.1) | 48 (48-48) |
| 12 | 41.6 (38.5-43.4) | 98.1 (97.6-98.6) | 1.9 (1.4-2.4) | 0.8 (0.5-0.8) | 125 (98-183) | 58.4 (56.6-61.5) | 19.2 (16.2-23.8) | 80.8 (76.2-83.8) | 11.2 (9.1-14.6) | 8.9 (6.8-10.9) | 47 (47-47) |
| Shibahashi 1 | |||||||||||
| 8 | 26.9 (20.4-31.2) | 98.9 (98.4-99.4) | 1.1 (0.6-1.6) | 0.3 (0.1-0.5) | 333 (204-778) | 73.1 (68.8-79.6) | 10.5 (9.4-12.0) | 89.5 (88.0-90.6) | 7.7 (6.5-9.5) | 13.0 (10.5-15.5) | 65 (62-70) |
| 10 | 26.5 (19.8-30.7) | 98.5 (98.1-99.4) | 1.5 (0.6-1.9) | 0.4 (0.1-0.6) | 250 (174-781) | 73.5 (69.3-80.2) | 13.1 (11.7-14.9) | 86.9 (85.1-88.3) | 9.6 (8.1-11.9) | 10.4 (8.4-12.3) | 64 (61-68) |
| 12 | 26.0 (19.4-30.3) | 98.1 (97.6-99.3) | 1.9 (0.7-2.4) | 0.5 (0.1-0.7) | 200 (135-784) | 74.0 (69.7-80.6) | 15.5 (14.0-17.6) | 88.3 (82.4-84.5) | 11.5 (9.8-14.2) | 8.7 (7.1-10.2) | 63 (60-66) |
Abbreviations: ALS, advanced life support; BLS, basic life support; FN, false negative; FP, false positive; TN, true negative; TOR, termination of resuscitation; TP, true positive; UTOR, universal termination of resuscitation.
a
Values are presented with 95% CIs.
b
Calculated as [(TP + FP)/(TP + FP + FN + TN)].
c
Calculated as [(TP)/(TP + FP)] for correct and [(FP)/(TP + FP)] for incorrect.
d
Calculated as [(FP)/(TP + FP + FN + TN)].
e
Calculated as [1/(% Miss)].
f
Calculated as [(TN + FN)/(TP + FP + FN + TN)].
g
Calculated as correct – [(TN)/(FN + TN)] for correct and [(FN)/(FN + TN)] for incorrect.
h
Calculated as [(TN)/(TP + FP + FN + TN)].
i
Calculated as [1/(% Survivor)].
j
Calculated as [(FN)/(TP + FP + FN + TN)].