Scheerbaum P, Book S, Jank M, et al. Computerised cognitive training tools and online nutritional group counselling for people with mild cognitive impairment: study protocol of a completely digital, randomised, controlled trial. BMJ Open 2022;12:e060473. doi: 10.1136/bmjopen-2021-060473
The article has been updated since its online publication. The authors wish to clarify that, during the preparation of the main results publication of the study, an unfortunate error was identified in the originally published study protocol.
The error pertains to the classification of primary and secondary outcomes in the publication. In both the ethics application submitted to the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) Ethics Committee and our original registration with the International Standard Randomised Controlled Trial Number (ISRCTN), we accurately specified only one main outcome: Cognitive performance assessed through the Montreal Cognitive Assessment (MoCA). Regrettably, the computerised cognitive test battery (ccTB) was inaccurately designated as the main outcome in the publication; however, it is, in fact, a secondary outcome employed to measure cognition.