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Table 9 Sensitivity analysis including all potential cases (7,795) matched to 5 controls

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

  Model A1 and A2 Model B Model C
  Odds ratio Odds ratio Odds ratio
Contraceptives 1.92 (1.76-2.10) 2.00 (1.82-2.18) 1.97 (1.80-2.16)
VTE in relative 2.42 (2.24-2.60) 2.47 (2.29-2.66) 2.45 (2.27-2.64)
VTE in relative *Contraceptives    1.23 (0.84-1.82)
  1. *=times sign