Table 4.

Usability of ChemoFreeBot

Chatbot usability	Mean ± S D	Chatbot group (n = 50)
		Strongly Disagree		Disagree		Neutral		Agree		Strongly Agree
		No.	%	No.	%	No.	%	No.	%	No	%
1. The chatbot’s personality was realistic and engaging	3.64 ± 1.24	6	12.0	0	0.0	14	28.0	18	36.0	18	36.0
2. The chatbot seemed too robotic	1.82 ± 0.66	16	32.0	27	54.0	7	14	0	0.0	0	0.0
3. The chatbot was welcoming during initial setup	4.28 ± 0.67	0	0.0	0	0.0	6	12.0	24	48.0	20	40.0
4. The chatbot seemed very unfriendly	1.96 ± 0.67	12	24.0	28	56.0	10	20.0	0	0.0	0	0.0
5. The chatbot explained its scope and purpose well	4.06 ± 0.82	0	0.0	0	0.0	15	30.0	17	34.0	18	36.0
6. The chatbot gave no indication as to its purpose	1.74± 0.78	23	46.0	17	34.0	10	20.0	0	0.0	0	0.0
7. The chatbot was easy to navigate	3.90 ± 1.31	6	12.0	0	0.0	9	18.0	13	26.0	22	44.0
8. It would be easy to get confused when using the chatbot	1.78 ± 0.65	17	34.0	27	54.0	6	12.0	0	0.0	0	0.0
9. The chatbot understood me well	4.16 ± 0.84	0	0.0	0	0.0	14	28.0	14	28.0	22	44.0
10. The chatbot failed to recognise a lot of my inputs	1.98 ± 0.80	16	32.0	19	38.0	15	30.0	0	0.0	0	0.0
11. Chatbot responses were useful, appropriate and informative	4.20 ± 0.53	0	0.0	0	0.0	3	6.0	34	68.0	13	26.0
12. Chatbot responses were irrelevant	1.90 ± 0.89	22	44.0	11	22.0	17	34.0	0	0.0	0	0.0
13. The chatbot coped well with any errors or mistakes	4.26 ± 0.83	0	0.0	0	0.0	12	24.0	13	26.0	25	50.0
14. The chatbot seemed unable to handle any errors	2.08 ± 0.83	15	30.0	16	32.0	19	38.0	0	0.0	0	0.0
15. The chatbot was very easy to use	4.28 ± 0.57	0	0.0	0	0.0	3	6.0	27	54.0	20	40.0
16. The chatbot was very complex	1.58 ± 0.50	21	42.0	29	58.0	0	0.0	0	0.0	0	0.0
Total score (Mean ± S D)	49.94 ± 5.64
Total mean score after normalizing (SUS score)	78.03 ± 8.82