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Table 2 The relationship between the number of points on the Wells scale and confirmed episodes of DVT of the lower extremities

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

Chi-square test p <0.0001

Number of points on the Wells scale

≤0

1÷2

≥3

Total number of patients

646

302

100

Without Thrombosis

645

283

60

Thrombosis

1 (0.15%)

19 (6.29%)

40 (40%)

95% confidence interval

0.03%÷0.87%

4.06%÷9.62%

30.94%÷49.80%