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

The Chinese University of Hong Kong

Status: Completed

Conditions: Vaccination Refusal

Treatments: Behavioral: online health promotion video; Behavioral: Control (same online health promotion video)

Study type: Interventional

Funder types: Other

Identifiers

NCT05155241

17180411

Details and patient eligibility

About

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.

Enrollment: 396 patients

Sex: All

Ages: 65+ years old

Volunteers: No Healthy Volunteers

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)

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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396 participants in 2 patient groups

Intervention

Experimental group

Description:

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)

Treatment:

Behavioral: online health promotion video

Control

Active Comparator group

Description:

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

Treatment:

Behavioral: Control (same online health promotion video)