Groups

Cases

D-dimer testing positive (% of cases)

Lower extremity vascular Doppler ultrasound positive (% of cases)

Group 1 Group 2 Group 3

125 112 202

30.4(38/125)

16.1(18/112)

17.8(36/202)

8.8(11/125)

1.8(2/112)

1.5(3/202)

Statistical Value P-Value

10.64.

0.010

13.25 0.001