Results of ultrasonography (US) and computed strain gauge plethysmography (CSGP) on all 23 d-dimer positive patients with suspected deep vein thrombosis
| Results | Number (%) | US | CSGP |
|---|---|---|---|
| True negative | 16(69) | −ve | −ve |
| True positive | 1(4) | +ve | +ve |
| False positive | 4(17) | −ve | +ve |
| False negative | 2(8) | −ve | +ve |