# Visualisation of Information Using Patient Journey Maps for a Mobile Health Application
## 5 Prototype Development and User Evaluation
### Main Study
#### 5.4.3 Results of the Main Study  
**Daily healthcare:** Participants in their 20s were the most likely to manage their health through exercise, diet, and nutritional supplements, with three out of ten using a mobile health app (i.e., an exercise tracker). These participants tended to focus more on managing their health habits than on managing their diseases. Among the participants in their 40s to 60s, five out of seven were taking care of their health, including regular health check-ups, the use of nutritional supplements, exercise, and diet. Two out of seven participants used health-related mobile apps, but their use was limited to making doctors' appointments, and they found it difficult to download and use health apps. **Overall perception of the prototype:** The participants were positive about the prototype and were satisfied with its overall usability, regardless of their age. The survey results also revealed that users in their 20s, 40s, and 60s were highly satisfied, with an average satisfaction rating of 6 or higher for all items on a 7-point Likert scale. Furthermore, the final prototype improved user satisfaction compared with the portrait and landscape types with which users were highly satisfied in the pilot study (Figure 6). When the respondents were asked about their willingness to use the service if it was to be released in the manner in which the prototype was designed, they expressed a high level of willingness, regardless of their age. Despite being less prone to illnesses, the participants in their 20s were more likely to use the service and would recommend it to others. People in their 40s to 60s, who are more active in managing their health, often do not use disease management apps because they find it difficult to learn how to use new apps, but all 10 participants of this age group expressed interest in using the prototype. In addition to actively participating in the management of the disease under treatment, some of these participants stated that they would use the prototype to become aware of their physical condition through information in their medical records. Figure 6: Graph showing user survey results. **Evaluation of patient-centred PJM information delivery methods:** The participants were willing to use the integrated treatment information that was organised according to the PJM, as they stated that it was necessary. The greatest benefit was the ability to view previous medical treatments at a glance. Personal disease treatment data have previously been organised by medical institutions or in chronological order, which makes it difficult to check by disease. However, the app categorises treatment information by disease and allows patients to view their disease history quickly and conveniently. Furthermore, participants in their 40s and 60s cited the ability to recall what they were told about at the hospital as a significant advantage; they stated that it was very convenient and necessary to manage disease data in an integrated manner. As this age group is highly interested in disease management, there were many opinions stating that it is useful for users to be the subjects of their medical data, such as by being able to occasionally view their test records on the app. _'The best part is that I can see my records at a glance, especially in situations where I need to see my previous treatment history or check my medication history at the hospital'. (P1-20s)_  
_'I can see my health at a glance, so I think I can use it well'. (P11, 40s)_  
However, some participants questioned whether the technology could aggregate and manage the data. _'It's so good (to see it by disease), but I wonder if it's possible to aggregate and show the records like this'. (P12, 40s)_  
_'I don't know if it's actually a feasible technology'. (P13, 40s)_  
**Evaluation of information visualisation:** All participants, regardless of their age, agreed that the presentation of the prototype was appropriate for the mobile environment and did not feel unfamiliar.