Table 1.

Means and standard deviations of the Post-Study System Usability Questionnaire result.

Category	No.	Item	Mean	SD
System usefulness	1	Overall, I am satisfied with how easy it is to use this application	4.67	0.557
	2	It was simple to use this application	4.80	0.399
	3	I was able to complete the tasks and scenarios quickly using this application	4.53	0.601
	4	I felt comfortable using this application	4.55	0.747
	5	It was easy to learn to use this application	4.80	0.426
	6	I believe I could become productive quickly using this application	4.34	0.905
Information quality	7	The application gave error messages that clearly told me how to fix problems	3.85	1.398
	8	Whenever I made a mistake using the application, I could recover easily and quickly	4.16	1.067
	9	The information (such as on-line help, on-screen messages and other documentation) provided with this application was clear	4.43	0.701
	10	It was easy to find the information I needed	4.47	0.654
	11	The information was effective in helping me complete the tasks and scenarios	4.52	0.673
	12	The organization of information on the application screens was clear	4.76	0.477
Interface quality	13	The interface of this application was pleasant	4.57	0.789
	14	I liked using the interface of this application	4.51	0.819
	15	This application has all the functions and capabilities I expected it to have	4.29	1.064
Overall	16	Overall, I am satisfied with this application	4.42	0.880
Total			4.48	0.832