Fehring R., Schneider, M., & Barron, M.L. (2008). Efficacy of the Marquette Model of natural family planning. The American Journal of Maternal Child Nursing, 33(6), 348-354.
Key Results
12-month “correct use” pregnancy rate was 0.6 (i.e., 99.4% effective) and the “typical use” (total pregnancy rate) was 10.6 (i.e., 89.4% effective) per 100 users.
Conclusion
When used correctly, the MM system of NFP is an effective means of avoiding pregnancy. The efficacy of the MM system includes proper preparation of the professional nurse NFP teachers.