Statistical analyses
tumor
TUMOR
The statistical analyses were performed by using SPSS version 25 (International Business Machines Corporation (IBM), Armonk, NY). The graphs were visualized with GraphPad Prism version 9 (GraphPad Software, San Diego, CA) and edited with PowerPoint version 16 (Microsoft, Redmond, WA). Data and tables were managed with Excel version 16 (Microsoft, Redmond, WA).Descriptive statistics were given as median with limits of the interquartile range (IQR) [25th–75th percentile]. For the statistical evaluation, the results of group A and the second questionnaire (after stereoscopic visualization) of group B were compared by using the Mann–Whitney Comparison of group A and group B on mean age, percentage of patients under and over 65 years, gender distribution, level of education, and type and location of tumor (age: Mann–Whitney 