Tables 2 and 3 summarize the post-test results. Table 3
shows the results of the usability measurements for each task,
and compares the DPT student and stroke subject groups.
Although the students appeared more efficient while using
the interface, there was no significant difference in efficiency
between the two groups, except in task 3. There were no
significant differences for completion rate, time-on-task, and
errors per subject, except for time-on-task for task 3, where
the students were significantly faster. The two groups had
similar numbers for errors per subject. In Group 1, only one
out of ten people decided to use the keyboard instead of the
sliders to enter a goal, while in Group 2, six out of eight
people used the keyboard.