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  • Retraction Note
  • Open Access

Retraction Note: Improving usability and pregnancy rates of a fertility monitor by an additional mobile application: results of a retrospective efficacy study of Daysy and DaysyView app

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Reproductive Health201916:54

https://doi.org/10.1186/s12978-019-0728-3

  • Published:

The original article was published in Reproductive Health 2018 15:37

The Editor-in-Chief is retracting this article [1]. After publication concerns were raised about the reliability of the estimates of contraceptive effectiveness for the Daysy device when being used together with the DaysyView app [2]. Independent post-publication peer review has confirmed that there are fundamental flaws in the methodology which mean that the conclusions are unreliable due to selection bias and the retrospective self-reporting of whether pregnancies were intentional. The authors do not agree with this retraction. In particular, the authors are of the opinion that the retrospective design of their underlying study is described and that the respective disadvantages are discussed transparently in this article.

Notes

Declarations

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Authors’ Affiliations

(1)
Frauenklinik, Universitätsklinikum, Erlangen, Universitaetsstrasse 21–23, 91,054, Erlangen, Germany

References

  1. Koch MC, Lermann J, van de Roemer N, Renner SK, Burghaus S, Hackl J, Dittrich R, Kehl S, Oppelt PG, Hildebrandt T, Hack CC, Pohls UG, Renner SP, Thiel FC. Improving usability and pregnancy rates of a fertility monitor by an additional mobile application: results of a retrospective efficacy study of Daysy and DaysyView app. Reprod Health. 2018;15:37.View ArticleGoogle Scholar
  2. Polis CB. Published analysis of contraceptive effectiveness of Daysy and DaysyView app is fatally flawed. Reprod Health. 2018;15:113.View ArticleGoogle Scholar

Copyright

© The Author(s). 2019

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