Table 3.

System Usability Scale-Modified scores (1=strongly disagree to 5=strongly agree).

	Raw score, mean (SD)
I think I would like to use this system frequently	4.40 (0.74)
I found the system unnecessarily complex	1.40 (0.83)
I thought the system was easy to use	4.93 (0.26)
I think that I would need the support of a technical person to be able to use this system	1.13 (0.52)
I found the various functions in this system were well integrated	4.40 (0.83)
I thought there was too much inconsistency in this system	1.20 (0.56)
I would imagine that most people would learn to use this system very quickly	4.87 0.35)
I found the system very cumbersome to use	2.40 (1.35)
I felt very confident using the system	4.80 (0.41)
I needed to learn a lot of things before I could get going with this system	1.47 (0.74)