Questionnaires
depressed, cognitive failures
To reveal cognitive failures in daily living, we used the Cognitive Failures Questionnaire (CFQ), which is the most widely used instrument to assess self‐reported cognitive failures (Carrigan & Barkus, We assessed health‐related quality of life using the 36‐Item Short Form Health Survey (SF‐36, Version 1.0) (Bullinger & Kirchberger, For all questionnaires, the CFQ, the MCQ, and the SF‐36 handling with missing data were as follows. If the patients answered at least 50% of all items per factor, per time point, the mean score of this factor was calculated to determine the values of the factors. Items that were left blank (missing data) were not considered. Therefore, the factor values represent the average for all items of a factor that the respondent responded to.Since worries about one`s cognition could have an impact on self‐reported cognitive failures in a way that depressed people answering themselves more conservative (Könen & Karbach, 