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2019 ITU Kaleidoscope Academic Conference

Figure 5 – The proposed interface of the registration page: The user interface on a desktop (Left) and a smartphone (Right).

patient’s information, 2) Find a patient with a given dummy
ID number and view the patient’s information, and 3) Register
a new patient with a given dummy name and other details like
gender, age, date of birth, and date of registration. For the
second part of the user study, to evaluate the usability of the
proposed interface, we followed the same structure used in
the first part.

4.5 Data Collection

Figure 6 – The interface of HotJar, the data collection tool For the desktop environment, we were able to collect 20 and
used in our user study. (Left) The red-line indicates the 11 datapoints in Study 1 and 2, respectively. For a smartphone
moving trajectory of the mouse cursor. The color dots on the setting, we gathered five and four datapoints in Study 1 and
bottom side illustrate events such as clicking, typing, and so 2, respectively. For both studies in Cameroon, participants
on. (Right) The list shows the actions performed sequentially. used a two-in-one computer, which is both a laptop and a
tablet combined in one lightweight, portable device. After
finishing the user studies in a laptop setting, they flipped its
screen, switched to the tablet mode, and conducted another
study contains two interfaces, two devices, and three jobs. part of the study.
In this study, laptop and desktop were not distinguished and
considered as “Desktop”. First, we attempted to examine
the usability of the current interface of C4G BLIS. Among We excluded some datapoints for a number of reasons. First,
many factors (e.g., learnability, efficiency, memorability, and the datapoints from the tablet setting were removed because
errors) used to test the usability, we chose the efficiency; the we did not provide precise guidelines for that environment.
time a user takes to complete a task (The rationale for this We also excluded the log data for people that did not follow
being the fact that the primary objective of the system is to directions. For example, we asked a participant to find a
manage patient data as quickly as possible [15]). patient on the registration page. However, he or she moved
to the search page and found the patient. In this case, the
two menus were different for the two pages. In Nigeria,
In the training sessions with the regional administrators, participants were not allowed to access patient data on the
we ensured that they randomize the order of desktop and smartphone. Thus, they decided not to participate in the
smartphone studies for each participant. After a regional study with the smartphone setting. Due to the tablet issue in
administrator explained the goal and details of the user study Cameroon and the security policy issue in Nigeria, we were
to a participant, he/she was asked to perform three tasks - able to capture fewer datapoints on smartphones compared to
1) Find a patient with a given dummy name and view the desktops.

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