Pre- and posttest probability of HIT using a combined approach of the 4Ts and EIAs
| Reference . | Design . | N . | Pretest probability of 4Ts . | Posttest probability of 4Ts (+ assay/− assay) . | ||||
|---|---|---|---|---|---|---|---|---|
| Low (0-3) . | Intermediate (4-5) . | High (6-8) . | Low (0-3) . | Intermediate (4-5) . | High (6-8) . | |||
| 27 | Single center, retrospective | 1291 | 0.8% | 14% | 53% | NR | 65%/0% | 95%/0% |
| 28 | Multicenter, prospective | 380 | 2.1% | 11% | 47% | 11%/0.06% | 42%/0.4% | 83%/2.6% |
| 24 | Multicenter, prospective | 526 | 1.9% | 7% | 37% | 15%/0% | 42%/0% | 88%/0% |
| Reference . | Design . | N . | Pretest probability of 4Ts . | Posttest probability of 4Ts (+ assay/− assay) . | ||||
|---|---|---|---|---|---|---|---|---|
| Low (0-3) . | Intermediate (4-5) . | High (6-8) . | Low (0-3) . | Intermediate (4-5) . | High (6-8) . | |||
| 27 | Single center, retrospective | 1291 | 0.8% | 14% | 53% | NR | 65%/0% | 95%/0% |
| 28 | Multicenter, prospective | 380 | 2.1% | 11% | 47% | 11%/0.06% | 42%/0.4% | 83%/2.6% |
| 24 | Multicenter, prospective | 526 | 1.9% | 7% | 37% | 15%/0% | 42%/0% | 88%/0% |
EIA, enzyme immunoassay; NR, not reported.