Table 2.

Summary of factors used in the stratification of risk of venous thromboembolism (VTE) in the different guidelines.

Risk factors	Braga and Young (10)	Raffini et al. (11)	Hanson et al. (12)	Meier et al. (14)	Mahajerin et al. (13)
Central venous catheter	√	√	√	√	√
Exogenous estrogen	√	√	√	√	√
Immobility	√	√	√	√	√
Inflammatory disease		√	√	√	√
Lower extremity trauma	√	√	√	√
Obesity	√	√		√	√
Prior VTE		√	√	√	√
Infection		√		√	√
Malignancy	√		√	√
Spinal cord injury		√	√	√
Thrombophilia		√	√	√
Burns	√	√
Cardiac disease	√				√
Family history of VTE		√			√
Lower extremity surgery		√		√
Mechanical ventilation	√				√
Nephrotic syndrome		√		√
Pregnancy	√	√
Admission to the intensive care unit					√
Asparaginase therapy				√
Cardiopulmonary resuscitation			√
Hyperosmolar therapy				√
Inotropes			√
Low Glasgow Coma Score			√
Major surgery	√
Parenteral nutrition					√
Prolonged hospital stay					√
Sickle cell disease					√
Steroids	√