The Creighton Model FertilityCareTM System is highly effective for avoiding or achieving pregnancy. It is a true system of natural family planning since it can be used to avoid or achieve pregnancy – it’s up to the couple to decide which way to use the system.





Using the System to Avoid Pregnancy

As published in the Journal of Reproductive Medicine1:

  • The method effectiveness (using the system perfectly) is 99.5%
  • The use-effectiveness (typical use with real life conditions) is 96.8%


As a comparison, the birth control pill has a typical use effectiveness of only 95%2




Using the System to Achieve Pregnancy

For couples of normal fertility, 76% get pregnant the first cycle. 98% are pregnant by the sixth cycle.

For more information on the effectiveness for couples with infertility, see “Help with Infertility” .

What about help with infertility?




  1. Hilgers, TW, and Stanford, JB: Creighton Model NaProEducation Technology for Avoiding Pregnancy: Use-Effectiveness, J Repro Med 43:95-502, 1998
  2. Hatcher RA, Trussell J, et. Al: Contraceptive Technology.
    17th revised edition, Ardent Media, New York, 1998.