Table 1.

The System Usability Scale (standard version)

		Strongly disagree				Strongly agree
		1	2	3	4	5
1	I think that I would like to use this system	O	O	O	O	O
2	I found the system unnecessarily complex	O	O	O	O	O
3	I thought the system was easy to use	O	O	O	O	O
4	I think that I would need the support of a technical person to use this system	O	O	O	O	O
5	I found the various functions in the system were well integrated	O	O	O	O	O
6	I thought there was too much inconsistency in this system	O	O	O	O	O
7	I would imagine that most people would learn to use this system very quickly	O	O	O	O	O
8	I found the system very cumbersome to use	O	O	O	O	O
9	I felt very confident using the system	O	O	O	O	O
10	I needed to learn a lot of things before I could get going with this system	O	O	O	O	O
Calculating system usability score18: Odd-numbered questions (subtract 1 from the score). Even-numbered questions (subtract their value from 5) Take these new values and add up the total score then multiply by 2.5.