A RCT Evaluating an Online Intervention in Increasing Pneumococcal Vaccination Among Older Adults
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About
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.
Enrollment
Sex
Ages
Volunteers
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).
Trial design
Primary purpose
Allocation
Interventional model
Masking
374 participants in 2 patient groups
Trial contacts and locations
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Central trial contact
Zixin Wang, PhD
Data sourced from clinicaltrials.gov
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