Table 4.

Usability and workload of the prototype near field communication-enabled medication administration system, assessed through a modified International Business Machines Post Study System Usability Questionnaire.

Question	Strongly Agree ------------> Strongly Disagree							Rating average
	1	2	3	4	5	6	7
Overall, I am satisfied with how easy it is to use this system.	13	6	0	1	0	0	0	1.45
It was simple to use this system.	14	5	1	0	0	0	0	1.35
I could effectively complete the tasks and scenarios using this system.	14	5	0	1	0	0	0	1.40
I was able to complete the tasks and scenarios quickly using this system.	12	7	0	1	0	0	0	1.50
I was able to efficiently complete the tasks and scenarios using this system.	12	7	0	1	0	0	0	1.50
I felt comfortable using this system.	12	7	1	0	0	0	0	1.45
It was easy to learn to use this system.	15	4	1	0	0	0	0	1.30
I believe I could become productive quickly using this system.	14	4	1	1	0	0	0	1.45
The organization of information on the system screens was clear.	15	4	1	0	0	0	0	1.30
The interfacea of this system was pleasant.	15	4	0	1	0	0	0	1.35
I liked using the interfacea of this system.	14	5	0	1	0	0	0	1.40
Overall, I am satisfied with this system.	13	5	1	1	0	0	0	1.50

^aThe “interface” includes those items that you use to interact with the system. For example, some components of the interface are the keyboard, the mouse, the microphone, and the screens (including their use of graphics and language).