Use Effectiveness of the Creighton Model Ovulation Method of Natural Family Planning

Abstract

Objective: To determine the use effectiveness of the Creighton model ovulation method in avoiding and achieving pregnancy. Design: Prospective, descriptive. Setting: A natural family planning clinic at a university nursing center. Participants: Records and charts from 242 couples who were taught the Creighton model. The sample represented 1,793 months of use of the model. Main outcome measure: Creighton model demographic forms and logbook. Results: At 12 months of use, the Creighton model was 98.8% method effective and 98.0% use effective in avoiding pregnancy. It was 24.4% use effective in achieving pregnancy. The continuation rate for the sample at 12 months of use was 78.0%. Conclusion: The Creighton model is an effective method of family planning when used to avoid or achieve pregnancy. However, its effectiveness depends on its being taught by qualified teachers. The effectiveness rate of the Creighton model is based on the assumption that if couples knowingly use the female partner's days of fertility for genital intercourse, they are using the method to achieve pregnancy.

Efficacy of the Marquette Method of Natural Family Planning

“…An earlier study of a CVM-only method at Marquette University yielded a prospective perfect use unintended pregnancy rate of 2% and a typical use rate of 12% among a similar population of women users to the current study (Fehring, Lawrence, & Philpot, 1994). So too the 2007 prospective efficacy study of the MM yielded a perfect use rate of 3% and typical rate of 12%.…”

Fertility Awareness-Based Methods: Another Option for Family Planning

“…44 Many recent studies of modern FABMs included only self-selected patients, which is more consistent with clinical practice. 5,11 Early FABM investigations usually excluded data from the "learning phase" (typically 3 cycles), skewing the data in favor of FABMs. More recent studies include this period in their data.…”

“…More recent studies include this period in their data. 5,11 In addition, FABMs are unique in that they can also be used for achieving pregnancy. Pregnancy rates are therefore reported in categories of perfect-use (method-related) pregnancies, achieving- related pregnancies, and typical-use pregnancies.…”

Accuracy of the peak day of cervical mucus as a biological marker of fertility

“…According the findings of this study, if couples wait until the end of Day 4 after the PD, 99% of the time, they will be in the infertile period (luteal) phase of the woman's cycle. The Creighton Model has been found to be 98 -99% method effective in a number of studies and in multiple sites in the United States [21][22][23].…”