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Table 4 The relationship between the number of points on the Wells score threshold equal to 2 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 = 2

Thrombosis

Without Thrombosis

Number of points on the Wells scale: >2

40

60

Number of points on the Wells scale: ≤2

20

928

Sensitivity: 66.66%

Positive predictive value: 40.00%

Specificity: 93.93%

Negative predictive value: 97.89%