Table 6  Impact of hormonal contraceptives on the risk of VTE.

Progestogen in COC	Relative risk of VTE compared to COC with levonorgestrel	Incidence (per 10 000 women per year of use)	Estimated number of new cases of VTE in Germany per year (around 6.8 million users) (15)
Non-users	–	2	1360
Levonorgestrel	1	5 – 7	3400 – 4760
Norgestimate/norethisterone	1	5 – 7	3400 – 4760
Dienogest	1.6	8 – 11	5440 – 7480
Gestodene/desogestrel/drospirenone	1.5 – 2	9 – 12	6120 – 8160
Etonogestrel/norelgestromin	1 – 2	6 – 12	4080 – 8160
Chlormadinone/nomogestrol acetate + E2	unknown	unknown	unknown