Table 3.

System Usability Scale (SUS)—a Ten-item questionnaire to assess user satisfaction

No.	Item
1	I think I would like to use the web site frequently
2	I found the web site unnecessarily complex
3	I thought the web site was easy to use
4	I would likely use this system to meet CME needs
5	I found the various functions in this web site were well integrated
6	I thought there was too much inconsistency in this web site
7	I would imagine that most people would learn to use this web site very quickly
8	I found the web site very cumbersome to use
9	I felt very confident using the web site
10	I need to learn a lot about this web site before I could effectively use it