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NCT05772117 Clinical Trial

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

Vaccination Refusal Clinical Trial

Official title:
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

Clinical Trial Details — Status: Recruiting

Administrative data
NCT number NCT05772117
Other study ID # 20190972
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date March 13, 2023
Est. completion date August 31, 2024

Study information
Verified date April 2023
Source Chinese University of Hong Kong
Contact Zixin Wang, PhD
Phone +852 22528740
Email wangzx@cuhk.edu.hk
Is FDA regulated No
Health authority
Study type Interventional

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.

Recruitment information / eligibility
Status Recruiting
Enrollment 374
Est. completion date August 31, 2024
Est. primary completion date August 31, 2024
Accepts healthy volunteers No
Gender All
Age group 65 Years and older
Eligibility 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).

Study Design

Related Conditions & MeSH terms

Intervention

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.
• Chatbot-delivered standard interventions
Participants receive Chatbot-delivered general information related to PV at Month 0, 1, 2, and 3.

Locations
Country Name City State
Hong Kong Centre for Health Behaviours Research, the Chinese University of Hong Kong Hong Kong

Sponsors (1)
Lead Sponsor Collaborator
Chinese University of Hong Kong

Country where clinical trial is conducted

Hong Kong, 

Outcome
Type Measure Description Time frame Safety issue
Primary Pneumococcal vaccination uptake Self-reported uptake of pneumococcal vaccination within the 12-month follow-up period 12 months
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