A Randomized Controlled Trial Evaluating an Online Intervention in Increasing Seasonal Influenza Vaccination Among Community Dwelling People Aged ≥65 Years

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

396 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-12-01

Study Completion Date

2022-07-30

Brief Summary

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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.

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Detailed Description

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Conditions

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Vaccination Refusal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

NONE

Study Groups

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Intervention

Participants 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)

Group Type EXPERIMENTAL

online health promotion video

Intervention Type BEHAVIORAL

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)

Control

Participants will watch a same online video providing general advices related to SIV at week 0, 2, 4, and 6

Group Type ACTIVE_COMPARATOR

Control (same online health promotion video)

Intervention Type BEHAVIORAL

Participants will watch a same online video providing general advices related to seasonal influenza vaccination at week 0, 2, 4, and 6

Interventions

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online health promotion video

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)

Intervention Type BEHAVIORAL

Control (same online health promotion video)

Participants will watch a same online video providing general advices related to seasonal influenza vaccination at week 0, 2, 4, and 6

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 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

Exclusion Criteria

* 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)

Minimum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No