The chart below is intended to help couples find an NFP method that fits their needs. If you have questions, then please contact Jenny Ingles for more information.
Theoretical Effectiveness Rate⁰ |
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Actual Use Effectiveness Rate⁰ |
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Postpartum Effectiveness Rate⁰ |
88% |
96.8% |
90% |
No Data |
Can be used to Avoid Pregnancy |
Yes |
Yes |
Yes |
Yes |
Can be used to Achieve Pregnancy |
Yes |
Yes |
Yes |
Yes |
Number of Biomarkers used |
1 |
1 |
1-3 |
2-3 |
Can be used with irregular cycle lengths |
Yes |
Yes |
Yes |
Yes |
Can be used with PCOS |
Yes |
Yes |
No≠ |
No† |
Can be used to treat Infertility |
No** |
Yes |
No |
No |
Can be used to treat gynecological conditions |
No |
Yes |
No |
No |
Can be used in Perimenopause |
Yes |
Yes |
Yes |
Yes |
Can be used with Breastfeeding |
Yes |
Yes |
Yes |
Yes‡ |
Can be used by women who have irregular waking times |
Yes |
Yes |
Yes |
No† |
Can be learned Online |
Self-paced or with Instructor (in person or Online) |
With Instructor (in person or Online) |
With Instructor (in person or Online) |
Self-paced or with Instructors (in person or Online) |
Average length of time before system mastery |
6 Hoursʬ |
7 Hoursʬ |
6 Hoursʬ |
6 Hoursʬ |
Charting App available |
Yes |
Yes |
Yes |
Yes |
Used by NaProTECHNOLOGY |
No |
No |
No |
⁰ Effectiveness Rate of Avoiding Pregnancy
† Causes inaccuracies in Basal Body Temperature which reduces the Effectiveness Rate at avoiding pregnancy to 88%
≠ PCOS is associated with Estrogen Dominance which causes inaccuracies in Estrogen Hormone strips
** Infertility associated with PCOS can be treated using this Method; however, other causes of infertility cannot
‡ This method can be used during Breastfeeding; however, no studies regarding the effectiveness at avoiding pregnancy have been conducted
ʬ Teaching hours are broken up over the course of multiple sessions. Some couples require more teaching hours in order to gain system mastery