Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New natural method of family planning over 95% effective in preventing pregnancy, study finds

10.06.2002


Research shows that women who use CycleBeads correctly are able to avoid unplanned pregnancies more than 95% of the time.
(Georgetown University Medical Center)


The Standard Days Method (TM), a new natural method of family planning, is more than 95% effective at preventing pregnancy, according to an international study conducted by Georgetown University Medical Center’s Institute for Reproductive Health. Results of the study are published in the current issue of Contraception, the journal of the Association of Reproductive Health Professionals.

Based on sophisticated computer modeling of reproductive physiology data, the Standard Days Method identifies the 12-day "fertile window" of a woman’s menstrual cycle. These 12 days take into account the life span of the woman’s egg (about 24 hours) and the viable life of sperm (about 5 days) as well as the variation in the actual timing of ovulation from one cycle to the next. The study found the efficacy of the Standard Days Method to be comparable to or better than a number of other widely used methods of family planning, including the diaphragm and condom.

The two-year clinical trial evaluated the effectiveness of the Standard Days Method of family planning for 478 women in Bolivia, Peru and the Philippines. The women were of childbearing age with menstrual cycles between 26 and 32 days long. The study followed the women over 13 cycles.



"Millions of women worldwide use no form of family planning whatsoever, even though they do not want to become pregnant. And millions more rely on periodic abstinence as their primary form of family planning, but do not have a clear understanding of which days in their cycle they should avoid unprotected intercourse," said Victoria Jennings, PhD, Georgetown professor of obstetrics and gynecology and principal investigator of the study. "Clearly there is a need for a simpler, easier method of natural family planning--and that is where the Standard Days Method can really fill a void."

To help women keep track of which days to avoid unprotected intercourse, the Institute for Reproductive Health developed CycleBeads (TM), a string of 32 color-coded beads with each bead representing a day of the menstrual cycle. Beginning with the red bead, which represents the first day of her menstrual period, the woman moves a small rubber ring one bead each day. The brown beads are the days when pregnancy is very unlikely, and the glow-in-the dark white beads (beads 8-19) represent her fertile days. The 478 women who participated in the clinical trial relied on CycleBeads to track their cycles.

The method works best for women whose cycles are usually between 26 and 32 days long. Women use the CycleBeads and the Standard Days Method the same way every month.

"In our research, CycleBeads were found to be an easy way for women to use the Standard Days Method. They are an effective tool for women who want to use a reliable, inexpensive, non-invasive, non-hormonal method of family planning," said Dr. Jennings.

The Standards Days Method differs from the rhythm method in that the rhythm method requires that the woman collect detailed information about the last six menstrual cycles and perform monthly calculations to figure out which days in the current cycle she is most likely to get pregnant. The Standard Days Method requires no such calculations. No reliable, scientific effectiveness trial of the rhythm method has been reported.

According to the 1998 edition of Contraceptive Technology, 85% of women who use no method of family planning will get pregnant in one year. The percent of women who will become pregnant during the first year of perfect use of a "user-controlled" method is as follows:


Cervical cap, 9 - 26%
Spermicides, 6%
Diaphragm, 6%
Female condom, 5%
Male condom, 3%
Birth control pills, 0.1 - 0.5%
Standard Days Method, 5% (2002 Georgetown study)

Several thousand women in 14 countries currently use the Standard Days Method and CycleBeads. Plans to manufacture and distribute CycleBeads in numerous countries, including the United States, are currently underway. More information about the Standard Days Method and CycleBeads can be found at www.irh.org.


Co-authors of the new Standard Days Method study published in Contraception are Marcos Arevalo, MD, MPH and Irit Sinai, PhD, both assistant professors of obstetrics and gynecology at Georgetown University Medical Center. The study was funded by the U.S. Agency for International Development.

Georgetown University Medical Center includes the School of Medicine, School of Nursing and Health Studies, the Lombardi Cancer Center and a $120 million biomedical research enterprise. The Institute for Reproductive Health (www.irh.org) conducts research, advances scientific information, and provides policy support in natural family planning and fertility awareness.


Beth Porter | EurekAlert

More articles from Health and Medicine:

nachricht New High-Performance Center Translational Medical Engineering
26.04.2017 | Fraunhofer ITEM

nachricht A promising target for kidney fibrosis
21.04.2017 | Brigham and Women's Hospital

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Scientist invents way to trigger artificial photosynthesis to clean air

26.04.2017 | Materials Sciences

Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli

26.04.2017 | Agricultural and Forestry Science

SwRI-led team discovers lull in Mars' giant impact history

26.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>