Table 6.

Odds ratios comparing the risk of non-fatal venous thromboembolism in users of different contraceptives.

Adapted from MEGA study [33]

Type of progestin	OR	95% CI
Levonorgestrel	3.6	2.9–4.6
Gestodene	5.6	3.7–8.4
Norgestimate	5.9	1.7–21.0
Drospirenone	6.3	2.9–13.7
Ciproterone acetate	6.8	4.7–10.0
Desogestrel	7.3	5.3–10.0

OR odds ratio, CI confidence interval