Journal Section:
Expression of Concern

The Publisher and Editor are issuing an Expression of Concern on the article titled “Accelerated Coasting Does Not Affect Oocyte Maturation” [Gynecol Obstet Invest 2018;83:145–150; https://doi.org/10.1159/000477297] by Ahmed F. Galal, Hadeer Aly Abbassy, Ashraf Hany AbdElrahman, Mohamed Sayed Abdelhafez, and Ahmed Badawy.

After the publication of this article, similarities in study design, recruitment, and patient demographics between this article and a previous article by the authors [1] were brought to the attention of the journal. The relevant previously published article [1] is not referenced in this article.

When asked to comment on the similarities between the two studies, the corresponding author stated that there are no individuals in common between the two studies. They stated that “there may appear that there are some similarities in some values, there are differences in others (BMI, duration of infertility, fertilization rate, and pregnancy rate, OHSS rate). Similarities in patients’ characteristics representing a pool of population (same inclusion criteria for both articles) are not unknown, in retrospective as well as RCTs.” They further stated that the study period, methodology, hypothesis tested, medication, and approval granting institution were different between the studies. The authors provided the anonymized original data for this article to the journal for review.

The Editors reviewed the author’s response and determined that, as the previous article [1] was not cited in this article and given the high degree of similarity between the two independent groups of women in average demographic and baseline characteristics, an Expression of Concern should be published. Readers should thus interpret the data presented in the article with caution while this concern is unresolved.

Reference

 1 Galal AF, Abbassy HA, Abd Elrahman AH. Acceleration of coasting enhances pregnancy rate in ICSI cycles at risk for ovarian hyperstimulation syndrome. Journal of Reproduction and Contraception. 2016 Jun 1;27(2):103–11.

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2023