Data Sharing for Demographic Research Logo and Title

Fertility and Oral Contraceptive Use Study (FOCUS) (ICPSR 34560)

Principal Investigator(s):


Oral contraceptives (OCs) are the most popular reversible method of contraception in the United States. Although most women using OCs experience reliable protection against pregnancy, nearly half of the 3 million unintended pregnancies in the United States annually occur among the 90 percent of women who use contraception. While lack of adherence to OCs has been assumed to be the primary cause of OC failure, recent findings suggest that obesity may reduce the biological effectiveness of OCs. The goal of this project was to examine methodological issues related to the successful implementation of a large, prospective cohort study to investigate the role of obesity in OC failure.

Access Notes

  • These data are not available from DSDR. Users should consult the data owners directly for details on obtaining these resources.

Study Description


This study was funded by:

  • United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development

Scope of Study

Subject Terms:   birth control, fertility, obesity, unwanted pregnancies

Geographic Coverage:   United States

Data Collection Notes:

These data are not available from DSDR or ICPSR. Researchers should consult the principal investigator directly for details on obtaining access to the data and documentation:

Dr. Larissa R. Brunner Huber

Department of Public Health Sciences

9201 University City Boulevard

University of North Carolina

Charlotte, NC 28223