Table 3. Subgroup analysis results for all survey items (n = 309).

Note. The significance of the results was determined using t-tests, with significance defined as p < 0.05.

Measure Outcomes (mean ± SD)	Medical avatar group (n = 160)	Nonmedical avatar group (n = 149)	p-value
This video will cause changes in my behavior.
With avatar experience	4.24 ± 1.30	3.57 ± 1.58	0.006
Without avatar experience	4.21 ± 1.13	4.30 ± 1.22	0.650
This video causes me to make some changes in my behavior.
With avatar experience	4.27 ± 1.47	3.59 ± 1.66	0.009
Without avatar experience	4.15 ± 1.16	4.19 ± 1.20	0.847
After viewing this video, I will make changes in my attitude.
With avatar experience	3.65 ± 1.54	3.16 ± 1.61	0.058
Without avatar experience	3.76 ± 1.16	3.84 ± 1.11	0.686
This video is accurate.
With avatar experience	5.24 ± 1.29	4.69 ± 1.75	0.032
Without avatar experience	4.99 ± 1.22	5.20 ± 1.07	0.240
This video is trustworthy.
With avatar experience	5.13 ± 1.35	4.33 ± 1.65	0.002
Without avatar experience	4.52 ± 1.28	4.84 ± 1.02	0.083
I believe this video is true.
With avatar experience	5.56 ± 1.17	4.89 ± 1.79	0.008
Without avatar experience	5.18 ± 1.20	5.49 ± 1.16	0.101
This video has the potential to change viewer behavior.
With avatar experience	4.67 ± 1.61	3.71 ± 1.58	<0.001
Without avatar experience	4.31 ± 1.26	4.64 ± 1.10	0.082
This video has the potential to influence viewer behavior.
With avatar experience	4.80 ± 1.53	3.85 ± 1.61	<0.001
Without avatar experience	4.40 ± 1.36	4.66 ± 1.16	0.193
This video has the potential to inspire viewers.
With avatar experience	4.47 ± 1.56	3.60 ± 1.64	0.001
Without avatar experience	4.19 ± 1.32	4.45 ± 1.20	0.201
Perceived persuasiveness (total points)
With avatar experience	42.03 ± 9.89	35.40 ± 12.19	<0.001
Without avatar experience	39.71 ± 8.84	41.59 ± 7.75	0.153
How knowledgeable does this avatar appear?
With avatar experience	6.23 ± 2.07	4.20 ± 2.16	<0.001
Without avatar experience	5.24 ± 2.09	5.53 ± 1.78	0.345
How trustworthy does this avatar appear?
With avatar experience	5.93 ± 2.28	4.23 ± 2.26	<0.001
Without avatar experience	5.21 ± 2.12	5.32 ±1.76	0.716
How caring does this avatar appear?
With avatar experience	6.21 ± 2.47	4.68 ± 2.38	<0.001
Without avatar experience	5.38 ± 2.14	5.66 ± 1.78	0.361
How approachable does this avatar appear?
With avatar experience	6.21 ± 2.46	4.87 ± 2.49	0.001
Without avatar experience	5.19 ± 2.40	5.86 ± 1.77	0.044
How comfortable does this avatar make you feel?
With avatar experience	6.08 ± 2.53	4.79 ± 2.50	0.002
Without avatar experience	5.19 ± 2.37	5.50 ± 1.88	0.359
Acceptability (total points)
With avatar experience	30.67 ± 10.58	22.76 ± 10.29	<0.001
Without avatar experience	26.20 ± 10.37	27.88 ± 7.60	0.243
I have the confidence to move my body even when I am a little tired.
With avatar experience	2.75 ± 1.23	2.43 ± 1.27	0.120
Without avatar experience	2.85 ± 1.11	2.84 ± 1.12	0.959
I have the confidence to move my body even when I am not in the best mood.
With avatar experience	2.44 ± 1.16	2.32 ± 1.25	0.545
Without avatar experience	2.66 ± 1.18	2.66 ± 1.13	0.986
I have the confidence to move my body even when I am busy and have no time.
With avatar experience	2.47 ± 1.18	2.25 ± 1.19	0.276
Without avatar experience	2.48 ± 1.19	2.47 ± 1.16	0.960
I have the confidence to move my body even during holidays or breaks. (Irrelevant item)
With avatar experience	–	–	–
Without avatar experience	–	–	–
I have the confidence to move my body even when the weather is not very good.
With avatar experience	2.47 ± 1.21	2.41 ± 1.18	0.786
Without avatar experience	2.71 ± 1.15	2.70 ± 1.15	0.986
Exercise self-efficacy (total points)
With avatar experience	10.12 ± 4.15	9.41 ± 4.35	0.311
Without avatar experience	10.69 ± 4.04	10.68 ± 4.08	0.977