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Table 5 Test for additive interaction between family history of VTE and COC use

From: Family history of venous thromboembolism is a risk factor for venous thromboembolism in combined oral contraceptive users: a nationwide case-control study

  Beta (SE)
Contraceptives 0.12 (0.009)
VTE in relative 0.14 (0.011)
Interaction between VTE in relative and Contraceptives 0.05 (0.043)a
  1. Results from a regression model with an identity link for 2,311 females (age 15-49 years) with VTE in the Swedish population and their matched controls
  2. aThere was no significant additive interaction between family history of VTE and COC use, p-value was 0.27