Breastfeeding and Oral Contraceptives: a Randomized, Controlled Trial
Status:
Completed
Trial end date:
2008-06-01
Target enrollment:
Participant gender:
Summary
Objectives
To clarify the relationship between postpartum (2 weeks) use of progestin-only vs. combined
oral contraceptive pills and the outcomes of breastfeeding continuation, infant growth,
contraceptive method continuation, and pregnancy rates in breastfeeding women. Specific
research questions:
1. To determine whether there is a difference in rates of breastfeeding continuation at 2
months and 4 months between postpartum breastfeeding women using progestin-only pills
vs. combined pills.
2. To determine whether there is a difference in infant growth at 2 weeks and 8 weeks
between postpartum breastfeeding women using progestin-only pills vs. combined pills.
3. To determine whether there is a difference in birth control method continuation at 2
months and 4 months between postpartum breastfeeding women using progestin-only pills
vs. combined pills.
Hypothesis
Combined oral contraceptive pills, when initiated by postpartum breastfeeding women, will
cause a differential in continuation of breastfeeding: 35% continuation in the combined pill
group vs. 60% in the progestin-only pill group at 8 weeks.
Phase:
N/A
Details
Lead Sponsor:
University of New Mexico
Collaborator:
American College of Obstetricians and Gynecologists