A Mobile Health Intervention for HIV Prevention Among Racially and Ethnically Diverse Young Men: Usability Evaluation.
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BACKGROUND Mobile health mHealth apps have the potential to be a useful mode of delivering HIV prevention information particularly for young men 13 24 years who account for 21 of new HIV diagnoses in the United States We translated an existing evidence based face to face HIV prevention curriculum into a portable platform and developed a mobile Web app MyPEEPS Mobile OBJECTIVE The purpose of this study was to assess the usability of MyPEEPS Mobile from both expert and end user perspectives METHODS We conducted a heuristic evaluation with five experts in informatics to identify violations of usability principles and end user usability testing with 20 young men aged 15 to 18 years in New York NY Birmingham AL and Chicago IL to identify potential obstacles to their use of the app RESULTS Mean scores of the overall severity of the identified heuristic violations rated by experts ranged from 0 4 and 2 6 0 no usability problem to 4 usability catastrophe Overall our end users successfully completed the tasks associated with use case scenarios and provided comments recommendations on improving usability of MyPEEPS Mobile The mean of the overall Post Study System Usability Questionnaire scores rated by the end users was 1 63 SD 0 65 reflecting strong user acceptance of the app CONCLUSIONS The comments made by experts and end users will be used to refine MyPEEPS Mobile prior to a pilot study assessing the acceptability of the app across diverse sexual minority young men in their everyday lives