Table 2 Test characteristics in predicting massive transfusion (≥10 units of packed red blood cells) based on previously suggested threshold values [12 ]
Detection rate | False positive rate | PPV | NPV | |||||
|---|---|---|---|---|---|---|---|---|
INR >1.2 | 51.1 | (36.1-65.9) | 8.8 | (6.8-11.0) | 27.3 | (18.3-37.9) | 96.7 | (95.0-97.9) |
CT >94 sec | 28.9 | (16.4-44.3) | 8.8 | (6.9-11.2) | 16.5 | (9.1-26.5) | 95.5 | (93.7-96.9) |
CA5 ≤ 35 mm | 45.5 | (30.4-61.2) | 16.1 | (13.5-19.0) | 14.4 | (9.0-21.3) | 96.3 | (94.5-97.6) |
Alpha angle <65° | 37.2 | (23.0-53.3) | 12.2 | (9.9-14.8) | 15.1 | (8.9-23.4) | 96.0 | (94.2-97.3) |