Table 2 Number of pulmonary embolisms, failure rate, and 95% confidence interval, according to new d-dimer threshold
New d-dimer threshold μg/L | Included patientsa n | No. of PEs n | Failure rate (95% CI) % |
|---|---|---|---|
< 1000 | 97 | 0 | 0 (0–3.8) |
< 1100 | 119 | 0 | 0 (0–3.1) |
< 1200 | 144 | 1 | 0.7 (0.1–3.8) |
< 1300 | 164 | 3 | 1.8 (0.6–5.2) |
< 1400 | 183 | 5 | 2.7 (1.2–6.2) |
< 1500 | 198 | 5 | 2.5 (1.1–5.8) |