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Table 3 The relationship between the number of points on the Wells score threshold equal to zero points and confirmed episodes of DVT

From: Analysis of the accuracy of the Wells scale in assessing the probability of lower limb deep vein thrombosis in primary care patients practice

Threshold on Wells scale = 0 Thrombosis Without thrombosis
Number of points on the Wells scale: >0 59 343
Number of points on the Wells scale: ≤0 1 645
Sensitivity: 98.33% Positive predictive value: 14.68%
Specificity: 65.28% Negative predictive value: 98.85%