Table 2 Pooled estimates of sensitivity and specificity stratified by US technique
| Â | Sensitivity for all DVT | Sensitivity for proximal DVT | Sensitivity for distal DVT | Specificity |
|---|---|---|---|---|
Compression only, N = 22 | 90.3% (88.4 to 92.0) P < 0.001 | 93.8% (92.0 to 95.3) P = 0.005 | 56.8% (49.0 to 66.4) P < 0.001 | 97.8% (97.0 to 98.4) P = 0.01 |
Colour Doppler only, N = 5 | 81.7% (77.4 to 85.5) P < 0.001 | 95.8% (85.7 to 99.5) P = 0.427 | 43.5% (23.2 to 66.5) P = 0.009 | 92.7% (89.7 to 95.1) P = 0.003 |
Continuous wave Doppler only, N = 16 | 81.1% (78.2 to 83.7) P < 0.001 | 87.8% (84.7 to 90.5) P < 0.001 | 41.8% (32.5 to 51.6) P = 0.015 | 84.0% (81.4 to 86.3) P < 0.001 |
Triplex, N = 25 | 91.1% (89.0 to 93.0) P < 0.001 | 96.4% (94.4 to 97.9) P < 0.001 | 75.2% (67.7 to 81.6) P < 0.001 | 94.3% (92.5 to 95.8) P < 0.001 |
Duplex, N = 28 | 92.1% (90.7 to 93.5) P < 0.001 | 96.5% (95.1 to 97.6) P < 0.001 | 71.2% (64.6 to 77.2) P < 0.001 | 94.0% (92.8 to 95.1) P < 0.001 |
Others, N = 4 | 93.3% (88.8 to 96.4) P = 0.338 | - | - | 96.0% (92.2 to 98.2) P < 0.001 |