Stratified univariate analysis using pragmatic D-dimer cut-offs
| D-dimer threshold (μg/mL) | VTE+ | VTE– | Odds ratio (95% CI) | p-value |
|---|---|---|---|---|
| D-dimer >0.5 | 17/18 (94%) | 39/42 (92%) | 1.3 (0.18–17.9) | 0.82 |
| D-dimer >1 | 17/18 (94%) | 27/42 (64%) | 9.4 (1.41–105) | 0.02 |
| D-dimer >2 | 14/18 (78%) | 14/42 (33%) | 7.0 (1.95–21.6) | 0.002 |
| D-dimer >3 | 12/18 (67%) | 10/42 (24%) | 6.4 (1.87–19.3) | 0.002 |
| D-dimer >4 | 9/18 (50%) | 8/42 (19%) | 4.3 (1.32–14.2) | 0.01 |
Statistical significance was determined by Chi-squared test. VTE = venous thromboembolism.