HTI outcome* | |||
---|---|---|---|
Derivation sample | (95% CI) | Cross validation | |
*High therapeutic intensity (HTI) outcome: neurosurgery, laparotomy, vasopressor support, transfusion ⩾ 6 units of packed red blood cells, or death within 72 hours of ED presentation. | |||
Sensitivity | 94% | (91–97%) | 90% |
Specificity | 63% | (57–69%) | 55% |
Positive predictive value | 71% | (66–76%) | 66% |
Negative predictive value | 92% | (87–96%) | 85% |
Positive likelihood ratio | 2.56 | (2.18–3.01) | 2.00 |
Negative likelihood ratio | 0.09 | (0.05–0.15) | 0.19 |