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J Obstet Gynecol Neonatal Nurs. 2011 May-Jun;40(3):281-91. doi: 10.1111/j.1552-6909.2011.01237.x. Epub 2011 Apr 13.

Pilot evaluation of an internet-based natural family planning education and service program.

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College of Nursing, Marquette University, Milwaukee, WI 53201-1881, USA.



To evaluate the efficacy, knowledge of fertility, and acceptability of a web-based natural family planning (NFP) education and service program.


A 6-month repeated measure longitudinal evaluation pilot study.


A university based online website.


The website was piloted with 468 volunteer women seeking NFP services. Of these participants, 222 used the automatic online fertility charting system to avoid pregnancy. The 222 charting participants had a mean age of 29.9 years (SD=5.6), 2.2 children (SD=1.9), 37% were postpartum, and 47% had regular menstrual cycle lengths.


Nurse-managed web-based NFP education and service program.


Pregnancies were confirmed by an online self-assessed pregnancy evaluation form. A 10-item fertility quiz and 10-item acceptability survey was administered online.


Among the 222 users avoiding pregnancy, at 6 months of use, there were two correct-use unintended pregnancies that provided a pregnancy rate of 2% and seven total unintended pregnancies providing a typical use pregnancy rate of 7%. Mean knowledge of fertility increased significantly from time of registration (8.96, SD=1.10) to 1 month of use (9.46, SD=.10), t=4.60, p<.001). Acceptability increased nonsignificantly from 1 month of use (45.6; SD=8.98) to 6 months of use (48.4; SD=8.77).


The nurse-managed online NFP system seems to provide adequate knowledge of fertility and help participants meet pregnancy intentions. Acceptability of such a system of NFP is still in question.

[Indexed for MEDLINE]

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