Groups | Cases | D-dimer testing positive (% of cases) | Lower extremity vascular Doppler ultrasound positive (% of cases) |
Group 1 Group 2 Group 3 | 163 149 236 | 39.3(64/163) 25.5(38/149) 26.3(62/236) | 9.2(15/163) 2.0(3/149) 2.5(6/236) |
Statistical Value P-Value | 9.67 0.008 | 12.95 0.002 |