A Randomized Controlled Trial Evaluating an Online Intervention in Increasing Seasonal Influenza Vaccination Among Community Dwelling People Aged ≥65 Years
1 other identifier
interventional
396
1 country
1
Brief Summary
A non-blinded two-arm parallel randomized controlled trial will be conducted. Inclusion criteria are: 1) aged ≥65 years, 2) having Hong Kong ID, 3) Chinese speaking, 4) willing to be followed up by telephone, 5) having a smartphone, and 6) have not received SIV for the incoming flu season. Exclusion criteria include: 1) cognitive impairment, blindness or deafness, 2) not able to communicate with others effectively, and 3) with known contradictions of SIV (allergic to previous SIV, diagnosed/suspected egg allergy, with bleeding disorder or on warfarin). A total of 396 participants will be randomly assigned to either the intervention group (n=198) or the control group (n=198). Intervention group will watch an online health promotion video tailored to their current stage of change related to SIV uptake once every two weeks for four times (at week 0, 2, 4, and 6). Participants in the control group will watch a same online video providing general advices related to SIV at week 0, 2, 4, and 6. All participants will be followed up by telephone 3 and 6 months after the baseline survey.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Dec 2021
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 1, 2021
CompletedStudy Start
First participant enrolled
December 1, 2021
CompletedFirst Posted
Study publicly available on registry
December 13, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 30, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
July 30, 2022
CompletedMarch 7, 2023
March 1, 2023
8 months
December 1, 2021
March 5, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Seasonal influenza vaccination uptake
Self-reported uptake of one dose of seasonal influenza vaccination
6 months
Study Arms (2)
Intervention
EXPERIMENTALParticipants will watch an online health promotion video tailored to their current stage of change related to SIV uptake once every two weeks for four times (at week 0, 2, 4, and 6)
Control
ACTIVE COMPARATORParticipants will watch a same online video providing general advices related to SIV at week 0, 2, 4, and 6
Interventions
Participants will watch an online health promotion video tailored to their current stage of change related to seasonal influenza vaccination uptake once every two weeks for four times (at week 0, 2, 4, and 6)
Participants will watch a same online video providing general advices related to seasonal influenza vaccination at week 0, 2, 4, and 6
Eligibility Criteria
You may qualify if:
- Aged ≥65 years,
- Having Hong Kong ID
- Chinese speaking
- Willing to be followed up by telephone
- Having a smartphone
- Have not received seasonal influenza vaccination for the incoming flu season
You may not qualify if:
- Cognitive impairment, blindness or deafness,
- Not able to communicate with others effectively
- With known contradictions of seasonal influenza vaccination listed by the Centre for Health Protection (allergic to previous SIV, diagnosed/suspected egg allergy, with bleeding disorder or on warfarin)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Centre for Health Behaviours Research, the Chinese University of Hong Kong
Hong Kong, 666888, Hong Kong
Related Publications (1)
Wang Z, Chan PS, Fang Y, Yu FY, Ye D, Zhang Q, Wong MCS, Mo PKH. Chatbot-Delivered Online Intervention to Promote Seasonal Influenza Vaccination During the COVID-19 Pandemic: A Randomized Clinical Trial. JAMA Netw Open. 2023 Sep 5;6(9):e2332568. doi: 10.1001/jamanetworkopen.2023.32568.
PMID: 37695585DERIVED
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- HEALTH SERVICES RESEARCH
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor
Study Record Dates
First Submitted
December 1, 2021
First Posted
December 13, 2021
Study Start
December 1, 2021
Primary Completion
July 30, 2022
Study Completion
July 30, 2022
Last Updated
March 7, 2023
Record last verified: 2023-03