Table 2.
User engagement with the chatbot as measured by the UES-SFa questionnaire.
| UES-SF factor | Score (n=61), mean (SD) |
| Focused attention factor | 2.73 (0.79) |
| Perceived usability factor | 4.28 (0.66) |
| Aesthetic appeal factor | 3.09 (0.65) |
| Reward factor | 3.15 (0.84) |
| Total | 3.15 (0.84) |
aUES-SF: User Engagement Scale–Short Form. Scores for each item range from 1 (strongly disagree) to 5 (strongly agree). A total score is calculated and scores for each of the four subscales are calculated by adding scores for all the items related to their factor and dividing them by the total items.