NCT05772117

A RCT Evaluating an Online Intervention in Increasing Pneumococcal Vaccination Among Older Adults

A Randomized Controlled Trial Evaluating a Theory-based Online Intervention Via Fully Automated Chatbot in Increasing Pneumococcal Vaccination Among Community Dwelling Individuals Aged ≥65 Years

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 374 (estimated)
• Sponsor: Chinese University of Hong Kong · Academic / Other
• Sex: All
• Age: 65 Years
• Healthy volunteers: Not accepted

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.

Conditions

• Vaccination Refusal

Interventions

Type	Name	Description
BEHAVIORAL	Chatbot-delivered interventions tailored to stage of changes	Participants receive Chatbot-delivered interventions tailored to their stage of change regarding PV uptake in a conversational way at Month 0, 1, 2, and 3.
BEHAVIORAL	Chatbot-delivered standard interventions	Participants receive Chatbot-delivered general information related to PV at Month 0, 1, 2, and 3.

Timeline

• Start date: 2023-03-13
• Primary completion: 2024-08-31
• Completion: 2024-08-31
• First posted: 2023-03-16
• Last updated: 2023-04-06

Locations

1 site across 1 country: Hong Kong