Table 2. Open in new tab Task summary...

Table 2.

Task summary (mean, SD unless noted otherwise).

Task	Duration in seconds	Button clicks	Utterances	User errors (error rate)^a	Chatbot errors (error rate)^b
1. Find the list of current medications.^c	46.1 (25.4)	1 (0)	0 (0)	0	0
2. Find 2 of the side effects of Amlodipine.^c	69.1 (25.3)	3 (1)	1 (1)	0	0
3. Add 10 mg of Lisinopril every day at noon to your medication list.^d	131.6 (84.1)	2 (1)	3 (1)	1 (10%)^e	4 (12.9%)^f
4. Update your medication reminder schedule for Amlodipine to remind you to take it on weekends at 10 am.^d	120.7 (52.6)	4 (1)	2 (1)	1 (10%)^g	1 (4.5%)^f
5. View how many refills are left and the date of your next refill for Amlodipine.^c	60.8 (36.1)	1 (1)	1 (1)	0	0
6. Find your blood pressure values for the month of August 2020.^c	54.1 (20.8)	3 (3)	1 (1)	0	0
7. Add a blood pressure measurement of 120/80 that was taken on September 1, 2020.^d	100.1 (66.8)	2 (1)	3 (1)	0	6 (23.1%)^f^,h
8. Share your blood pressure measurements for the month of August 2020 with Dr. Smith.^d	69.3 (29.6)	4 (1)	1 (1)	0	0
9. Schedule an appointment with Dr. Smith for Tuesday, November 17th at 1 pm.^d	43.8 (24.1)	4 (2)	1 (1)	0	0
10. Find a healthy dinner recipe.^c	60.2 (28.8)	2 (1)	1 (1)	0	0
Total (mean, SD)	75.6 (51.5)	2.5 (1.7)	1.3 (1.2)	2 (2.0%)^a	11 (8.6%)^b

Task	Duration in seconds	Button clicks	Utterances	User errors (error rate)^a	Chatbot errors (error rate)^b
1. Find the list of current medications.^c	46.1 (25.4)	1 (0)	0 (0)	0	0
2. Find 2 of the side effects of Amlodipine.^c	69.1 (25.3)	3 (1)	1 (1)	0	0
3. Add 10 mg of Lisinopril every day at noon to your medication list.^d	131.6 (84.1)	2 (1)	3 (1)	1 (10%)^e	4 (12.9%)^f
4. Update your medication reminder schedule for Amlodipine to remind you to take it on weekends at 10 am.^d	120.7 (52.6)	4 (1)	2 (1)	1 (10%)^g	1 (4.5%)^f
5. View how many refills are left and the date of your next refill for Amlodipine.^c	60.8 (36.1)	1 (1)	1 (1)	0	0
6. Find your blood pressure values for the month of August 2020.^c	54.1 (20.8)	3 (3)	1 (1)	0	0
7. Add a blood pressure measurement of 120/80 that was taken on September 1, 2020.^d	100.1 (66.8)	2 (1)	3 (1)	0	6 (23.1%)^f^,h
8. Share your blood pressure measurements for the month of August 2020 with Dr. Smith.^d	69.3 (29.6)	4 (1)	1 (1)	0	0
9. Schedule an appointment with Dr. Smith for Tuesday, November 17th at 1 pm.^d	43.8 (24.1)	4 (2)	1 (1)	0	0
10. Find a healthy dinner recipe.^c	60.2 (28.8)	2 (1)	1 (1)	0	0
Total (mean, SD)	75.6 (51.5)	2.5 (1.7)	1.3 (1.2)	2 (2.0%)^a	11 (8.6%)^b

User error rate was calculated per task by: number of participants who did not successfully complete the task/total number of participants.

Chatbot error rate was calculated per task by: number of unrecognized utterances/total number of utterances.

Data retrieval task.

Data entry task.

Type of user error: did not confirm medication was added.

Type of unrecognized error: date/time format.

Type of user error: inputted incorrect medication.

Type of unrecognized error: blood pressure format.