Conclusion

After conducting the usability tests, the subjects thought that the interface was well made and had little difficulty using the interface. However, there were a couple of parts of the interface that the subjects thought were annoying because of redundancy or there were obvious mistakes.

On the Create a Journal screen, subjects had difficulty finding the correct button to add new questions. The "Create a new question" feature was placed away from the other buttons on the bottom of the screen. This caused confusion because subjects did not realize that in order to add the question, the button had to be pressed. However, after a confusing moment, all the subjects eventually managed to figure out that they needed to press the button.

Another feature added to the Create a Journal screen was a notification of a default question. The notification was added because once the user clicked on a default question, the question was automatically added to the question list without pressing any buttons to add the question to the list. To fix this problem, a message box will appear telling the user that the question was added. This message box tells the physician that the question was added and to allow the physician to review the question. The notification message box was also added to the "remove question from list" button to indicate that a particular question has been removed. The reason that the notification message box was added to the “remove question from list” button was to prevent the physician from removing a question that they did not intend to remove.

 

original "create a journal" screen

 

On the Daily Log Journal Response screen, subjects wanted a back button if they made a mistake and the test subjects did not think the “done adding entries” button was necessary. In the revised final prototype, a "Back" button was included to allow the physician or therapist to move back and forth between the question screen and the response screen when creating or editing the journal. Also, when creating the responses, the notification message box will appear when adding or removing a response for the "creator defined entries." This will prevent errors because it will allow the physician or therapist to check what they are adding or removing. The "done adding entries" button from the previous version was removed since subjects thought it was redundant to click two "Done" buttons to complete this task. Only the “Done” button at the bottom of the screen is necessary because it represents when the user is finished inputting all the required data.

original journal response screen


Subjects also were concerned about the need for more directions for the calendar on the Patient Welcome Screen. The test subjects weren’t entirely sure how and why they needed to enter the date. To remedy the problem, "Select a date below to view or create an entry" text was added to help guide the patient. Also on the calendar screen, the "Logout" button was previously "Exit DailyLog PHR" which was confusing because the button did not exit the entire program, it would only return back to the main login screen. Therefore, the name of the button was changed to “Logout” to make the user understand that they are logging out, not exiting the program.

original patient welcome screen


There was some confusion on the Journal Entry screen because for mood chart responses, the track bar indicating the depression level of the patient was not clearly label. In this version, the labels are located below the track bar instead of above which allows the viewer to identify the level of depression as indicated. Also, the arrow buttons for the "Hours Slept last night" were fixed because the functions of the arrow keys were reversed. The arrow up key decreased the number of hours slept and the arrow down key increased the number of hours slept.

 

original style of response question screen


Another problem with the interface was a lack of a help button. Even though it is necessary, the help button was not implemented in the usability test prototype. None of the test subjects noticed it was missing because they could figure out there problems on their own, but the help button was added.

Other aspects that the subjects thought would be helpful were larger screens. A larger screen would speed up completion of the interface and make the interface appear less cluttered, but the screen size depends on the user of the program and was not implemented.

Future work includes creating more chart options from the journal data for patients. The user will choose the data that they want and a chart will be displayed to allow the user to visually find inconsistencies in a person's mood, sleep, or any of the data compiled from the journals. This can help the physician and therapist identify any resistance to medications or any other abnormalities. Also, a small but beneficial addition is to add a color background to the calendar for current and future dates. This allows the user to know that the first colored box is today’s date. Future improvements would add more templates for medical problems that require daily journal entry, so other people other than bipolar and urinary incontinence people could benefit.