In the original article, there was a mistake in Table 3 “The sensitivity (Se), specificity (Sp), positive predictive value (PPV), confidence intervals (CI), negative predictive value (NPV), likehood ratios +'ve (LR+) and likehood ratios –'ve (LR-) for predicting ovulation within 24 h at 15, 20, 25, 30, 35, and 40 mIU/ml thresholds on the 11th day of the cycle”. Upon review of the tables prior to a journal club, it was noted that there were some numerical values that had been inadvertently misplaced under the wrong columns when updating different previously edited tables. The corrected Table 3 appears below.
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
Table 3
| Threshold (mIU/ml) | Sn (CI) | Sp (CI) | PPV | NPV | LR+ | LR– |
|---|---|---|---|---|---|---|
| 40 | 0.23 (0.08–0.50) | 0.99 (0.97–1.00) | 0.23 | 0.99 | 20.62 | 0.78 |
| 35 | 0.31 (0.13–0.58) | 0.99 (0.97–1.00) | 0.31 | 0.99 | 27.49 | 0.97 |
| 30 | 0.46 (0.23–0.71) | 0.99 (0.96–0.99) | 0.60 | 0.97 | 30.92 | 0.55 |
| 25 | 0.54 (0.29–0.77) | 0.97 (0.95–0.99) | 0.50 | 0.98 | 20.62 | 0.47 |
| 20 | 0.54 (0.29–0.77) | 0.96 (0.93–0.98) | 0.41 | 0.98 | 14.43 | 0.48 |
| 15 | 0.54 (0.29–0.77) | 0.94 (0.91–0.98) | 0.32 | 0.98 | 9.62 | 0.49 |
The sensitivity (Se), specificity (Sp), positive predictive value (PPV), confidence intervals (CI), negative predictive value (NPV), likehood ratios +'ve (LR+) and likehood ratios −'ve (LR−) for predicting ovulation within 24 h at 15, 20, 25, 30, 35, and 40 mIU/ml thresholds on the 11th day of the cycle.
Statements
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Summary
Keywords
ovulation predictor kits, luteinizing hormone, natural family planning, fertility awareness methods, infertility, urine, ovulation, fertile window
Citation
Leiva RA, Bouchard TP, Abdullah SH and Ecochard R (2018) Corrigendum: Urinary Luteinizing Hormone Tests: Which Concentration Threshold Best Predicts Ovulation?. Front. Public Health 6:345. doi: 10.3389/fpubh.2018.00345
Received
31 October 2018
Accepted
07 November 2018
Published
30 November 2018
Volume
6 - 2018
Edited and reviewed by
Rafael T. Mikolajczyk, Martin Luther University of Halle-Wittenberg, Germany
Updates
Copyright
© 2018 Leiva, Bouchard, Abdullah and Ecochard.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Rene Antonio Leiva rene.leiva@mail.mcgill.ca
This article was submitted to Population, Reproductive and Sexual Health, a section of the journal Frontiers in Public Health
Disclaimer
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