Risk assessment scales | sensitivity | specificity | negative predictive value | positive predictive value |
Caprini scale | 73.4% | 70.9% | 71.2% | 72.3% |
Padua scale | 85.6% | 32.2% | 55.8% | 69.1% |
X2 | 6.294 | 7.023 | 5.493 | 0.516 |
P | <0.05 | <0.05 | <0.05 | >0.05 |