TABLE 5.

Descriptive Statistics for the System Usability Scale

	Strongly disagree %	Disagree %	Neither agree or disagree %	Agree %	Strongly agree %	Mean	SD
I think that I would like to use this program frequently.	5.1	1.3	12.8	38.5	42.3	4.12	1.03
I found the program unnecessarily complex.	73.1	10.3	0.0	12.8	3.8	1.51	0.99
I thought the program was easy to use.	0.0	0.0	3.8	10.3	85.9	4.82	0.48
I think that I would need the support of a technical person to be able to use this program.	84.6	11.5	3.8	0.0	0.0	1.19	0.49
I found the various functions in this program were well integrated.	0.0	0.0	5.1	19.2	75.6	4.71	0.56
I thought there was too much inconsistency in this program.	79.5	12.8	5.1	1.3	1.3	1.32	0.75
I would imagine that most people would learn to use this program very quickly.	3.8	0.0	2.6	19.2	74.4	4.60	0.87
I found the program very cumbersome to use.	83.3	5.1	9.0	0.0	2.6	1.33	0.85
I felt very confident using this program.	2.6	0.0	0.0	13.0	81.8	4.71	0.76
I needed to learn a lot before I could use this program.	83.3	7.7	5.1	1.3	2.6	1.32	0.85

SD = standard deviation.