Notes on the results table:
- Odds are given relative to someone with a negative family history and no known risk factors for DVT.
- A family history of DVT is the presence of the condition in any parent, brother or sister.
- Environmental risk factors considered were surgery, injury, immobilization and pregnancy or delivery within three months of the study, use of oral contraceptive or hormone therapy at the time of the study, and cancer diagnosis within five years before or within six months after the start of the study.
- Genetic risk factors considered were the factor V Leiden variation, the prothrombin 20210A variation, and low levels of antithrombin, protein C or protein S.
|Family History||Environmental Risk Factor||Genetic Risk Factor||Odds of DVT|