“…Since uneven scale formats are not undisputed [ 29 ] and the methodological effects of changing the scale format with regard to attitude measurement are still under discussion [ 30 ], it was important to find out to what extent response behavior would change if the scale format was altered from an uneven number to an even number of responses. After consulting the Department for General Medicine and Healthcare Research at the University Clinic Heidelberg, it was decided to test both versions.…”