Table 4.

System Usability Scale (17).

	Strongly disagree				Strongly agree
I think that I would like to use this system frequently.	1	2	3	4	5
I found the system unnecessarily complex	1	2	3	4	5
I thought that the system was easy to use.	1	2	3	4	5
I think that I would need the support of a technical person to be able to use this system	1	2	3	4	5
I found that the various functions in this system were well-integrated.	1	2	3	4	5
I thought there was too much inconsistency in this system	1	2	3	4	5
I would imagine that most people would learn to use this system very quickly	1	2	3	4	5
I found the system very cumbersome to use.	1	2	3	4	5
I felt very confident using the system	1	2	3	4	5
I needed to learn a lot of things before I could get going with this system	1	2	3	4	5