Cardiovascular disease incidence among females in South Carolina by type of oral contraceptives, 2000-2013: a retrospective cohort study.

Arch Gynecol Obstet 2016 11 11;294(5):991-997. Epub 2016 Jul 11.

Cancer Prevention and Control Program, University of South Carolina, 915 Greene Street, Columbia, SC, USA.

Introduction: Certain types of oral contraceptives can produce favorable effects on lipid metabolism and vascular tone, while others have potentially detrimental effects. Endogenous and exogenous hormones exert different effects on high-density lipoprotein (HDL) and low-density lipoprotein (LDL) depending on the type, combination, and dose of the hormone. The estrogenic and progestogenic effects of exogenous hormones on HDL and LDL are inconsistent. Studying surrogate end points (LDL, HDL levels) may provide a misleading picture of OCs.

Methods: Medicaid data from 2000 to 2013 were used to assess the relationship between the type of OCs and CVD incidence. Multivariable logistic regression was used to model relationships between cardiovascular disease and OC use adjusting for potential confounders.

Results: Compared to combined oral contraceptives (COC), progestin-only oral contraceptives (POC) were associated with decreased heart disease and stroke incidence after adjusting for important covariates (OR 0.74; 95 % CI 0.57, 0.97 and OR 0.39; 95 % CI 0.16, 0.95, respectively). However, there was a positive association between POC + COC and both heart disease and stroke incidence (OR 2.28; 95 % CI 1.92, 2.70 and OR 2.12; 95 % CI 1.34, 3.35, respectively).

Conclusion: In light of an association between POC use and decreased heart disease and stroke, women's CVD risk factors should be carefully considered when choosing which OC to use. Baseline CVD risk should be a part of the discussion between women and their primary care providers when making choices regarding OCs.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5070797PMC
http://dx.doi.org/10.1007/s00404-016-4143-5DOI Listing
November 2016

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