A new method to detect significant basal body temperature changes during a woman's menstrual cycle

Freundl, Günter, Frank-Herrmann, Petra, Brown, Simon, and Blackwell, Leonard (2014) A new method to detect significant basal body temperature changes during a woman's menstrual cycle. European Journal of Contraception and Reproductive Health Care, 19 (5). pp. 392-400.

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Objective: To compare the results of a computer programme based on the Trigg’s tracking system (TTS) identification of the basal body temperature (BBT) shift day from daily records of BBT values (TTS transition day), with the BBT shift day identified from the same records using the Sensiplan® symptothermal method of natural family planning.

Methods: A computer programme was written to display the daily BBT readings for 364 menstrual cycles from 51 women aged 24 to 35 years, obtained from the German Natural Family Planning (NFP) database. The TTS transition day so identified from each record was then compared with the BBT shift day estimated from the same record by the Sensiplan® method.

Results: Total agreement between the methods was obtained for 81% (294/364) of the cycles and 18% (67) cycles differed by +/-1 day. For the 364 pairs of values distributed among 51 women the medians of the differences between the TTS transition day and Sensiplan® initial day of the BBT rise (shift day) were not significantly different (chi2 = 65.28, df = 50, p = 0.07205).

Conclusion: The advantages of the tracking signal algorithm are that in many cases it was possible to identify the BBT shift day on that very day – rather than only some days later – and to estimate the probability that a transition had occurred from the different values of the tracking signal.

Item ID: 53008
Item Type: Article (Research - C1)
ISSN: 1473-0782
Keywords: basal body temperature changes; ovulation; Sensiplan®; Trigg’s tracking signal; symptothermal method
Date Deposited: 05 Apr 2018 22:22
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1114 Paediatrics and Reproductive Medicine > 111404 Reproduction @ 50%
10 TECHNOLOGY > 1004 Medical Biotechnology > 100402 Medical Biotechnology Diagnostics (incl Biosensors) @ 50%
SEO Codes: 92 HEALTH > 9205 Specific Population Health (excl. Indigenous Health) > 920507 Womens Health @ 50%
92 HEALTH > 9202 Health and Support Services > 920203 Diagnostic Methods @ 50%
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