RETRACTED: The effect of obesity on the outcome of total knee replacement (TKR) [version 1; peer review: 1 approved with reservations]

RETRACTION NOTICE (6 th  October 2023): The article by AlOmran A. ‘The effect of obesity on the outcome of total knee replacement (TKR)’ [version 1; peer review: 1 approved with reservations].  F1000Research  2022,  11 1406 ( https://doi.org/10.12688/f1000research.126901.1 ) has been retracted from F1000Research by the F1000 Editorial Team. After publication, concerns were raised to the F1000 Editorial Team by a potential peer reviewer about the integrity of the data presented in the article. Investigation into the content of the article was performed by the F1000 Editorial Team, which revealed that the article had been published without the raw underlying data. The Editorial Team requested the raw underlying data for the research from the author, including a request for the ethical approval document, on 22 nd  March, 24 th  March, 19 th  April and 24 th  April 2023. The author did not respond to the requests to provide the underlying data, however, they did provide an ethical approval document. On review of the ethical approval document, its authenticity could not be validated. The author's institution was contacted on 22nd June, 24 th  July and 11 th  August 2023 to request further information about the underlying data and verify the ethical approval document. The author's institution has not responded to these requests. Therefore, the decision was made by the F1000 Editorial Team to retract this article, due to the inability to verify the ethical approval for this study and concerns over the integrity of the data. As per  F1000Research policies , ethical approval for this type of study must be sought prior to the study start and all articles that report original results should provide access to all data underlying the results, unless there is good justification. The author has seen a copy of this retraction notice and has not responded.