Venous thrombosis in users of non-oral hormonal contraception: follow-up study, Denmark 2001-10.

ABSTRACT:

Objective

To assess the risk of venous thrombosis in current users of non-oral hormonal contraception.

Design

Historical national registry based cohort study.

Setting

Four national registries in Denmark.

Participants

All Danish non-pregnant women aged 15-49 (n=1,626,158), free of previous thrombotic disease or cancer, were followed from 2001 to 2010.

Main outcome measures

Incidence rate of venous thrombosis in users of transdermal, vaginal, intrauterine, or subcutaneous hormonal contraception, relative risk of venous thrombosis compared with non-users, and rate ratios of venous thrombosis in current users of non-oral products compared with the standard reference oral contraceptive with levonorgestrel and 30-40 µg oestrogen. Diagnoses were confirmed by at

SUBMITTER: Lidegaard O 

PROVIDER: S-EPMC3349780 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature