Table 5:
Interaction of Factor V Leiden and Oral Contraceptive Pill (OCP) Use in the Relative Risk of Venous Thromboembolic Disease
  
Relative
Risk
Absolute
Risk*
Noncarrier women
1
0.8/10000
Noncarrier women on OCP
4
3.2/10000
Factor V Leiden heterozygosity
7
5.7/10000
Factor V Leiden heterozygous woman
on OCP
35
28.5/10000
*Estimated number of cases of VTE per 10000 persons per year.28
Copyright 2003 The Cleveland Clinic Foundation

Return to Hypercoagulable States Chapter