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Clinical Trial Summary

To evaluate the relative efficacy of an online intervention based on the Trans-theoretical Model delivered by a fully-automated Chatbot with natural language processing functions versus a control in promoting pneumococcal vaccination uptake among Hong Kong people aged ≥65 years. A total of 374 participants will be randomized evenly to either the intervention group or the control group. Participants in the intervention group will receive Chatbot-delivered interventions tailored to their stage of change regarding PV uptake in a conversational way at Month 0, 1, 2, and 3. Participants in the control group will receive Chatbot-delivered general information related to PV at Month 0, 1, 2, and 3. All participants will be followed up 6 and 12 months after completion of the intervention.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT05772117
Study type Interventional
Source Chinese University of Hong Kong
Contact Zixin Wang, PhD
Phone +852 22528740
Email wangzx@cuhk.edu.hk
Status Recruiting
Phase N/A
Start date March 13, 2023
Completion date August 31, 2024

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