Abstract
Prospectively collected cycles of 207 women were used to find out the efficacy of the Cyclotest 2 plus algorithm in detecting the fertile time in a woman's cycle. The results of the device were compared with the beginning and the end of the fertile time identified by the symptothermal method (STM) of natural family planning (NFP). It was found that the algorithm led to dangerous reduction of the fertile time (FT) in only 2 out of 207 woman cycles (0.96%). However, at the end of fertile time (FE) the device requested more abstinence than was necessary in about 12% of the cycles. We feel that more research should be performed on detecting the end of the fertile time.
Similar content being viewed by others
References
Freundl G, Frank-Herrmann P, Gnoth C. Rhythm and devices. Eur J Contracept Reprod Health. 1998;3.
Arbeitsgruppe NFP. Natürlich und sicher. München: Ehrenwirth Verlag; 1994.
Freundl G, Bonnar J, Flynn AM, Frank-Herrmann P, Kirkman R, Snowden R. Effektivität cines neuen Verhütungscomputers “PERSONA” Bericht über Testergebnisse in Deutschland. Fortschritte in der Medizin, Originalien 1998; 1/1198:25–30.
Weinberg CR, Gladen BC, Wilcox AJ. Models relating the timing of intercourse to the probability of conception and the sex of the baby. Biometrics. 1994;50:358–67.
Bonnar J, Collins W, Freundl G, May K, Snowden R, Senior S. Natural Contraception through Personal Hormone Monitoring. Unipath Publications; 1996.
Moreno JE, Khan DF, Goldzieher JW. Natural family planning: suitability of the CUE method for defining the time of ovulation. Contraception. 1997;55:233–7.
Freundl G, Bremme M, Frank H-P, Baur S, Godehardt E, Sottong U. The CUE fertility monitor compared to ultrasound and LH peak measurements for fertile time ovulation detection. Adv Contracept. 1996;12:111–21.
Loewit K, Hoppichler F, Ledermuller G, Widhalm G. Ovulation prediction from cyclic changes in salivary electrical conductivity [letter]. Am J Obstet Gynecol. 1990;163:708–10.
Freundl G, Baur S, Bremme M et al. Temperaturcomputer zur Bestimmung der fertilen Zeit im Zyklus der Frau: Babycomp, Bioself 110, Cyclotest D. Fertilität. 1992;8:66–76.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Freundl, G., Frank-Herrmann, P. & Bremme, M. Results of an Efficacy-Finding Study (EFS) with the Computer-Thermometer Cyclotest 2 Plus Containing 207 Cycles. Advances in Contraception 14, 201–207 (1998). https://doi.org/10.1023/A:1006624818151
Issue Date:
DOI: https://doi.org/10.1023/A:1006624818151