FIGURE 1.

List of available hormone preparations for contraception in the United States. Formulations are grouped roughly in order of ascending risk of VTE based on the best available evidence. Note the individual exceptions in each of the different generations of COC. *Effectiveness as measured by prevention of unwanted pregnancy in the first year of typical use (Reference [33]) †Contraindicated in those with prior DVT, though this is based on data regarding oral preparations of etonogestrel ‡Reference [30] §Reference [34] ¶ Contraindicated in body mass index ≥30 kg/m² **Reference [20] ††Not available in the United States for contraception but is included in this table for completion's sake ‡‡ All formulations with ethinyl estradiol dose of >50 μg are labeled as high risk of VTE. Abbreviations: COC, combined oral contraception; LNG IUD, levonorgestrel intrauterine device; OR, odds ratio; VTE, venous thromboembolism