Creighton Model Effectiveness, Intentions and Behaviors Assessment (CEIBA) (CEIBA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01012596
Recruitment Status : Completed
First Posted : November 13, 2009
Last Update Posted : May 15, 2013
Department of Health and Human Services
Information provided by (Responsible Party):
Joseph B. Stanford, MD, MSPH, University of Utah

November 2, 2009
November 13, 2009
May 15, 2013
October 2009
October 2012   (Final data collection date for primary outcome measure)
Pregnancy rates during perfect and typical use of the Creighton Model FertilityCare System (CrM) to avoid pregnancy in a way directly comparable to the approach used in recent family planning effectiveness studies [ Time Frame: 1 year ]
Same as current
Complete list of historical versions of study NCT01012596 on Archive Site
The intention status of all pregnancies according to standard measures of intended, mistimed and unwanted pregnancy while recognizing the significant limitations of these measures [ Time Frame: 1 year ]
Same as current
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Creighton Model Effectiveness, Intentions and Behaviors Assessment (CEIBA)
Effectiveness, Intention, and Behavior in Creighton Model NFP Use

The Creighton Model (CrM) FertilityCare System is a natural family planning method that teaches couples to recognize and chart the signs of fertility and infertility in the woman's cycle and to use that knowledge to either achieve or avoid a pregnancy. The method is natural, safe and effective, and it helps the couple understand their fertility. Trained practitioners at FertilityCare Centers teach the Creighton Model across the country, internationally and long distance.

Several FertilityCare Centers and the University of Utah are conducting a study to evaluate the effectiveness of the Creighton Model (CrM) for new and return users wanting to avoid pregnancy. While past studies have shown that the Creighton Model is a highly effective method, this study will use new ways to measure how well it works. This is important because the knowledge gained will improve comparisons between the Creighton Model and other family planning methods. The study will also explore intentions and behaviors of couples to avoid or achieve a pregnancy.

The investigators hypothesize that for the CrM the pregnancy rate during perfect use to avoid pregnancy will be about 1% and the behaviorally determined avoiding-related pregnancy rate for the CrM will be about 6%. The investigators will also evaluate the pregnancy rate during "typical use" without a previously stated intention to conceive (in CrM terms, a mixture of avoiding and achieving-related behavior).

There are a variety of natural family planning (NFP) methods available today that differ in algorithm and biomarkers used to identify women's fertile window. This study will directly evaluate the NFP system known as the Creighton Model FertilityCare System (CrM). The Creighton Model System is a well-established educational system about fertility which involves no devices. The CrM teaches women a standardized way of observing and describing their vaginal discharge each day during routine use of the bathroom, and interpreting the changes in vaginal discharge to determine whether they are likely to be fertile that day or not. Vaginal discharge changes as tracked by the CrM are an accurate indicator of the changes in secretions from the uterine cervix that relate to the approach of ovulation.

This study will also examine the relationship between a couple's stated intentions to achieve or avoid a pregnancy during each menstrual cycle with their sexual behavior during the same cycle. There is growing consensus among researchers that current measures of pregnancy intention are simplistic at best, and at worst can be very misleading. One of the purposes of the study is to explore the multiple dimensions of pregnancy motivations, intentions, and behaviors by newer detailed measures.

This study will enroll couples who are new or returning CrM users and who are trying to avoid a pregnancy at the time they begin use of the CrM. The participants will be recruited from CrM FertilityCare Centers. The design is a prospective cohort study, which is the optimal study design to assess different measures of effectiveness and intendedness simultaneously in a group of NFP users. Several of the key measures of intention and behavior required for this study must be assessed prior to the outcome of actual use of CrM over time and the outcome of pregnancy, to avoid recall bias. Outcomes for this study require relatively precise assessment of the timing of both intentions and behaviors, which is simply unavailable from recall. We plan to enroll at least 300 and up to 400 couples in the study. This represents 60% (300/497) of the estimated available and eligible couples learning the CrM for use to avoid pregnancy in one year at the participating FertilityCare Centers.

Observational Model: Cohort
Time Perspective: Prospective
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Non-Probability Sample
This study will enroll couples who are new or return Creighton Model (CrM) users and who are trying to avoid a pregnancy at the time they begin use of the CrM. The participants will be recruited from several CrM FertilityCare Centers across the United States and Canada. Participants who do not live near a center will be offered long distance teaching.
  • Pregnancy
  • Fertility
Behavioral: Creighton Model System of Natural Family Planning
Participants will learn the Creighton Model, a standardized method of natural family planning, from FertilityCare Practitioners from established FertilityCare Centers. The learning can be done in-person or long distance.
Other Names:
  • Natural Family Planning
  • Ovulation Method
  • Fertility Awareness
Creighton Model
New and return users of the Creighton Model FertilityCare System, a method of Natural Family Planning.
Intervention: Behavioral: Creighton Model System of Natural Family Planning
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
May 2013
October 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Being a new or return user of the Creighton Model with the stated intention of avoiding pregnancy
  • Sexually active or planning to be sexually active within 6 months of the enrollment date (relevant to some engaged couples who learn CrM)
  • The woman is between the ages of 18 to 40
  • The man is age 18 or older
  • The woman has had at least 2 menstrual flows in the past 3 months or at least one menstrual flow since stopping hormonal birth control
  • The woman is able to complete questionnaires in English

Exclusion Criteria:

  • History of infertility
  • Confirmed pelvic inflammatory disease, surgically confirmed untreated endometriosis, chemotherapy (either man or woman), or radiation to the reproductive tract (either man or woman)
  • Hysterectomy, oophorectomy (ovary removed), tubal ligation, fallopian tube surgery, surgery for ectopic pregnancy, removal of a testicle (orchiectomy) or vasectomy
  • Depo-Provera injection any time in the past 2 years
  • Totally breastfeeding an infant, without any supplements
Sexes Eligible for Study: All
18 Years to 40 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
Canada,   United States
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Joseph B. Stanford, MD, MSPH, University of Utah
University of Utah
Department of Health and Human Services
Principal Investigator: Joseph B Stanford, MD, MSPH University of Utah
University of Utah
May 2013