Developing and evaluating the usability of a web-based Diabetic Retinopathy Health Education Program for patients with type 2 diabetes mellitus

Article Figures & Data

Table 1

- The System Usability Scale score by 10 experts on Diabetic Retinopathy Health Education Programme webpage.

Items	Score by 10 experts
Items	E1	E 2	E 3	E 4	E 5	E 6	E 7	E 8	E 9	E 10
1. I would use this application (app) often.	5	5	5	4	4	4	4	3	3	4
2. I found the app unnecessarily complex.	2	2	3	3	3	2	2	2	2	2
3. I found the app easy to use.	3	4	4	4	4	5	5	4	4	4
4. I think help from technical support would be needed to be able to use this app.	2	1	1	1	1	1	1	2	2	1
5. I thought the different functions of the app were well integrated.	3	4	4	4	4	4	4	3	3	3
6. I thought there was great inconsistency in this app.	1	2	1	1	1	1	1	1	1	1
7. I would imagine that the majority of people would quickly learn how to use this app.	4	4	4	4	5	5	5	5	5	4
8. I found the app very hard to use.	1	1	1	1	2	2	2	2	2	1
9. I felt confident using this app.	4	4	4	4	4	4	5	5	5	5
10. I needed to learn a series of things before I could use the app.	1	2	1	2	2	2	1	1	1	1
The score for each expert	80	83	85	80	80	83	88	80	80	85
Average score	83

Table 2

- The System Usability Scale score by 16 participants on Diabetic Retinopathy Health Education Programme webpage.

Items	Score by 16 participants
Items	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16
1. I would use this application (app) often.	3	3	3	4	4	4	4	4	3	4	3	3	4	4	4	4
2. I found the app unnecessarily complex.	3	3	3	4	3	3	4	3	3	3	3	3	4	4	4	4
3. I found the app easy to use.	3	3	3	4	3	4	4	4	4	4	3	3	4	4	4	4
4. I think help from technical support would be needed to be able to use this app.	3	3	2	1	2	2	1	4	2	2	3	3	4	2	1	2
5. I thought the different functions of the app were well integrated.	3	3	3	4	3	3	3	4	4	4	3	3	4	3	4	4
6. I thought there was great inconsistency in this app.	2	2	2	2	2	2	2	2	3	1	2	1	2	2	1	1
7. I would imagine that the majority of people would quickly learn how to use this app.	3	2	3	4	4	2	3	4	4	4	3	3	4	4	4	4
8. I found the app very hard to use.	2	2	2	1	2	2	2	2	2	1	2	1	2	2	1	1
9. I felt confident using this app.	3	3	3	4	4	3	3	4	4	4	3	3	4	4	4	4
10. I needed to learn a series of things before I could use the app.	3	2	2	2	2	2	2	2	2	1	2	1	2	1	1	1
The score for each participant	58	58	63	83	70	65	73	70	70	83	63	68	70	75	88	85
Average Score	72