Efficacy of the Standard Days Method of Family Planning

This study has been completed.
Sponsor:
Collaborator:
United States Agency for International Development (USAID)
Information provided by:
Georgetown University
ClinicalTrials.gov Identifier:
NCT00505609
First received: July 20, 2007
Last updated: NA
Last verified: July 2007
History: No changes posted
  Purpose

The Standard Days Method® is a fertility awareness-based method of family planning in which users avoid unprotected intercourse during cycle day 8 through 19. The method is most appropriate for women with cycles that usually range 26-32 days. The clinical trial tested the contraceptive efficacy of the Standard Days Method. A total of 478 women, age 18-39 years, in Bolivia, Peru, and the Philippines, with self-reported cycles of 26-32 days, desiring to delay pregnancy at least one year were admitted to the study and followed for up to 13 cycles of method use.


Condition Intervention
Women's Health
Behavioral: Standard Days Method

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Official Title: Efficacy of the Standard Days Method of Family Planning

Resource links provided by NLM:


Further study details as provided by Georgetown University:

Primary Outcome Measures:
  • Pregnancy rate with correct method use [ Time Frame: 1 year (13 cycles) ]

Secondary Outcome Measures:
  • Pregnancy rate with typical method use [ Time Frame: 1 year (13 cycles) ]

Enrollment: 478
Study Start Date: November 1999
Study Completion Date: October 2001
Arms Assigned Interventions
Experimental: A
The Institute for Reproductive Health trained health providers in teaching the Standard Days Method to study subjects and in study procedures. Providers counseled study participants in method use. Participants were followed for up to 13 cycles of method use.
Behavioral: Standard Days Method
The Standard Days Method is a fertility awareness-based method of family planning. Users avoid unprotected intercourse during cycle days 8 to 19. Study participants were for up to 13 cycles of method use.
Other Name: CycleBeads

Detailed Description:

The Standard Days Method® is a fertility awareness-based method of family planning. Users avoid unprotected intercourse during cycle day 8 through cycle day 19. The method is most effective for women with cycles that usually range 26-32 days. It was developed by applying various formulae (i.e. various numbers of days and various sets of days) to over 7500 menstrual cycles in an existing data set from the World Health Organization, to determine which formula would provide the optimal balance between he length of the identified fertile period and the efficacy in avoiding unplanned pregnancy.

The purpose of the clinical trial was to test the efficacy of the method in preventing pregnancy.

Participants were from five sites in Bolivia, Peru, and the Philippines. In all sites, the Institute for Reproductive Health trained 5-10 health workers (service providers) in teaching the Standard Days Method to study subjects and in study procedures. Method provision involved a counseling session in which the woman (or the couple, if her partner was available) was instructed in the use of the method, and counseled on the importance of following the method recommendations to avoid pregnancy.

To assist women in monitoring their cycles, the provider gave them CycleBeads® a mnemonic device, a string of 32 beads in which each beads represents a day of the menstrual cycle. The first bead is red, representing the first day of menses; the next 6 beads are brown, representing the additional non-fertile days preceding the fertile window; the next 12 beads are white, representing days that should be considered fertile (8-19); and the remaining 13 beads are brown, again representing non-fertile days. It also has a moveable, tight-fitting rubber ring that is used to mark the current day of the cycle. Women were instructed to place the ring on the red bead on the day their menses began, and move the ring one bead per day until their menses returned. They also were told that to avoid pregnancy they should not have unprotected intercourse on the days the ring was on a white bead. If they had menstrual bleeding before day 27 of the cycle (i.e., a cycle shorter than 26 days), or if their menses had not occurred by the day after they completed all 32 beads (i.e., a cycle longer than 32 days), they were instructed to contact their provider for further assessment and advice. Women who had two cycles outside the 26 through 32 day range during the study period were advised to use another method, and were withdrawn from the study.

A total of 478 women wishing to use the Standard Days Method and meeting the eligibility criteria were admitted to the study after signing an informed consent form and interviewed monthly until they either completed 13 cycles of method use or left the study for other reasons. The first level of data collection was administered by the clients themselves. Each woman was asked to keep a daily diary to record menstrual bleeding, intercourse, and use of any other contraceptive method. The information on the diary card was reviewed by the clients and the service provider during each of the monthly follow-up contacts. In addition, follow-up forms were administered, which included questions concerning method use, satisfaction, and willingness to continue in the study.

Women who had not had their menses by day 42 of their cycle were tested for pregnancy. If results were negative, they were followed until they tested positive or their menses returned. Loss to follow-up was minimized by interviewing study participants in their homes and actively seeking out each participant, with a minimum of three attempts per cycle.

Single-decrement multi-censoring life tables were used to calculate pregnancy rates.

  Eligibility

Ages Eligible for Study:   18 Years to 39 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Women
  • Age 18-39
  • Married or living with stable partner
  • At least three cycles (four periods) since last birth
  • Self reported cycles 26-32 days long
  • Willing to avoid intercourse 12 consecutive days every cycle
  • Partners willing to collaborate
  • No known infertility problems
  • Not at risk for sexually transmitted infections
  • No contraindications of pregnancy
  • No use of hormonal contraceptives in three months prior to admission
  • Desiring to avoid pregnancy for at least one year

Exclusion Criteria:

  • Women who have cycles outside of the 26-32 day range
  • Women/couples not interested in the method
  • Women who have not yet had 3 regular cycles after childbirth
  • Women who have used hormonal contraceptives in the previous 3 months
  • Those women at risk for sexual transmitted infections
  • Women/couples who cannot manage the fertile days by avoiding intercourse or using a barrier method
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00505609

Locations
Bolivia
Institute for Reproductive Health, Bolivia
La Paz, Sopocachi, Bolivia, 243
Peru
Instituto de Salud Reporductiva
Lima, La Molina, Peru, 1885
Philippines
Institute for Reproductive Health, Philippines
Quezon City, Loyola Heights, Philippines, 1108
Sponsors and Collaborators
Georgetown University
United States Agency for International Development (USAID)
Investigators
Principal Investigator: Victoria H. Jennings, PhD Institute for Reproductive Health, Georgetown University
  More Information

Publications:
ClinicalTrials.gov Identifier: NCT00505609     History of Changes
Other Study ID Numbers: SDM-IRH
Study First Received: July 20, 2007
Last Updated: July 20, 2007
Health Authority: United States: Institutional Review Board

Keywords provided by Georgetown University:
fertility awareness-based method
family planning
Standard Days Method
Institute for Reproductive Health
Efficacy
CycleBeads

ClinicalTrials.gov processed this record on July 10, 2014