Editorial expression of concern: PICSI vs. MACS for abnormal sperm DNA fragmentation ICSI cases: a prospective randomized trial

Abstract

The Editor-in-Chief is issuing this Editorial Expression of Concern to alert readers that concerns have been raised about the data presented in this article. Specifically, Table 1 presents the demographic information about the PICSI arm of this study as a decimal percentage, even though such percentages are not possible for a cohort of 200. The authors have stated that the reason for this is that not all participants provide full information about all demographic characteristics, so in each case the values are a percentage of a number that is less than 200. However, the authors have not been able to provide patient-level data due to the confidentiality statement that was signed by participants included in this study, and so the Editor-in-Chief has not been able to confirm this explanation or to verify the number of participants who failed to return information for each demographic characteristic. Readers are advised to interpret the data presented in this article with caution