Target Audience and Preferences Related to an Australian Coronary Heart Disease Specific Mobile App: A Mixed Methods Study

Widespread availability of mobile technologies offers the opportunity to support secondary prevention of coronary heart disease (CHD) via mobile apps, however, the target audience and their app preferences are unknown. This study aims to identify the potential audience for an Australian CHD specific app and their recommendations and preferences.A two-phase mixed methods study: Phase 1: CHD patients (n=282) were surveyed on mobile app engagement. Phase 2: Four focus groups with regular app users (n=12) identified preferences and recommendations generated after using a CHD-specific publicly available app (MyHeartMyLife) for 2 weeks. Data were thematically analysed.Survey participants were aged ≥56 years (238/282, 84.4%) and male (204/282, 72.3%). More than one third (108/282, 38.3%) were regular app users, of whom 83/108, (76.9%) used health apps. Regular app users were more likely to be56 years (versus ≥70 years; OR 4.70, 95% CI 1.92, 11.51), employed (OR 3.07, 95% CI 1.63, 5.77) and had completed high school education (OR 2.37, 95% CI 1.30, 4.34). Focus group participants using the CHD-specific app were aged 41-79 years (mean 62.2 SD 5.3 years) and 10/12 were male. Coronary heart disease specific app preferences generated included: immediate access to relevant and practical health information and records; behaviour change motivation; more experienced app users located and used app features readily and provided support for less experienced users. In addition, ensuring ease of reading and interpreting data, adding physical activity tracking, the ability to integrate and synchronise with other apps and devices, and capacity to store additional personal medical records were also recommended.The target audience for CHD-specific apps is aged56 years, employed, has completed high school and is an experienced app user. User preferences and recommendations identified features present in publicly available apps, but many features need development.