Results

Overall, 43 eHealth usability evaluation methods were prioritized into ten recommended eHealth usability evaluation methods, 22 potentially useful eHealth usability evaluation methods, and 11 not recommended eHealth usability evaluation methods. Based on these findings, a toolbox called ToUsE (“Toolbox for eHealth Usability Evaluations”) was developed that comprises all 43 identified eHealth usability evaluation methods. The results of the exploratory case study showed that not all established eHealth usability evaluation methods are suitable for elderly users. Finally, 24 recommendations were developed on how to address challenges prior to, during, and after carrying out an eHealth usability evaluation.