Question-behavior effect and flu vaccination in the over 65s

Completed

• Conditions: Influenza; Respiratory; Influenza, virus not identified

• Registration Number: ISRCTN16437731
• Lead Sponsor: niversity of Leeds (UK)

Brief Summary

2017 results in: https://www.ncbi.nlm.nih.gov/pubmed/28347938

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Completion: 2013-02-07
• Study Start: 2016-03-22
• Last Update Posted: 28 May 2018

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 13452

Inclusion Criteria

1. Participants recruited from General Practices in the northern England, Leeds, UK area who were not taking part in a centralized influenza vaccination invitation scheme in Autumn 2012
2. The study population consisted of all patients in each practice eligible for an influenza vaccination that year by being age 65 years or over at their next birthday
3. A total of 13,806 patients were individually randomly assigned to one of eight conditions using a random number generator. Subsequently, 354 patients were deemed ineligible for vaccination (i.e., due to having left the General Practice, being deceased, unable to have a vaccination due to a medical condition, or having already received a vaccination) and excluded from the study, leaving 13,452 patients who were included in intention-to-treat analyses
4. A total of 4934 completed questionnaires (43.1%) were returned from 11752 sent out. The sample was 56.2% female with a mean age of 75.5 years (SD = 7.88) and mainly lived in areas of low deprivation (Townsend score M = -1.49, SD = 2.93). The eight different conditions were equivalent on gender and age but significantly different on deprivation

Exclusion Criteria

Does not meet inclusion criteria

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Receiving an influenza vaccination in period 28/07/2012 to 07/02/2013 following invitation as indicated by records