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
Trial Snapshot
- Phase
- Not Applicable
- Status
- Recruiting
- Enrollment
- 374
- Locations
- 2
- Primary Endpoint
- Pneumococcal vaccination uptake
Study Overview
Brief 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.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Health Services Research
- Masking
- None
Eligibility Criteria
- Ages
- 65 Years to — (Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •aged ≥65 years
- •having Hong Kong ID
- •Chinese speaking
- •have not received any penumococcal vaccination
- •willing to be followed up by telephone
- •having a smartphone
- •able to send and read text/voice messages via smartphone.
Exclusion Criteria
- •blindness or deafness
- •not able to communicate with others effectively
- •with known contradictions of pneumococcal vaccination
- •having been diagnosed with major psychiatric illness
- •scored ≤16 in the validated telephone version of the Cantonese Mini-mental State Examination (T-CMMSE).
Outcomes
Primary Outcomes
Pneumococcal vaccination uptake
Time Frame: 12 months
Self-reported uptake of pneumococcal vaccination within the 12-month follow-up period
Secondary Outcomes
No secondary outcomes reported
Investigators
Zixin Wang
Assistant Professor
Chinese University of Hong Kong