Research Article

Evaluating the Use of a Negative D-Dimer and Modified Low Wells Score in Excluding above Knee Deep Venous Thrombosis in an Outpatient Population, Assessing Need for Diagnostic Ultrasound

Table 3

Identified risk factors.

Identified risk factors

Active cancer
Previous venous thromboembolism
Family history of venous thromboembolism
Hospital admission/surgery within past 12 weeks
Pregnancy
High BMI (BMI > 30 kg/m2)
Intravenous drug use
Recent journey of more than 31/2 hours
Thrombophilia
Age > 60 years
OCP/HRT