Text messaging reminders for influenza vaccine in primary care

ISRCTN ISRCTN48840025
DOI https://doi.org/10.1186/ISRCTN48840025
ClinicalTrials.gov number NCT01892631
Secondary identifying numbers 14673
Submission date
22/07/2013
Registration date
22/07/2013
Last edited
19/08/2019
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Respiratory
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Background and study aims
Flu causes a substantial financial burden to the NHS and to the UK as a whole. The flu vaccine is safe and effective but is required annually because the circulating strain of virus changes each year. In the UK in 2012, the Chief Medical Officer recommended that at least 75% of elderly people (aged 65+) and 75% people under 65 with certain chronic conditions (e.g. chronic heart disease, diabetes, asthma, etc) should be vaccinated. While primary care practices are achieving these targets for elderly patients, those set for younger patients with chronic conditions are not consistently being met, with a third of patients missed in the 2011/12 flu season. Therefore strategies to increase flu vaccine uptake in these patients are required. Previous trials have shown that patient reminders can increase vaccine uptake and in particular, text messaging has shown to work in some populations in the United States as a cheap, simple and effective reminder. However, whether the same is true in UK general practice is unclear. Text messaging is already used in roughly 30% of practices to remind patients about their flu vaccine but there has been no trial addressing its effectiveness. Therefore, we are performing a trial of a text messaging flu vaccine reminder in patients aged under 65 who have a chronic condition.

Who can participate?
Practices will be eligible to participate if they currently use text messaging to contact practices, but did not send a text message to patients under 65 at clinical risk in the 2012/13 influenza season.

What does the study involve?
Our study will randomly allocate general practices to either standard care (in which practices are required to carry out their seasonal flu vaccination campaign as planned), or to receive additional resources allowing the practice to send a targeted text messaging campaign to eligible patients aged under 65 with a chronic condition. Practices in the text messaging arm will also be required to complete a short questionnaire. Vaccine uptake will be measured remotely through completely anonymised electronic patient medical records.

What are the possible benefits and risks of participating?
Practices in the intervention arm will receive additional resources to enable them to send a text message to support their seasonal influenza vaccination campaign. Practices in the intervention arm will receive a £200 incentive to participate. If the text message is effective, then it will increase uptake of flu vaccine within the practice. This will result in additional incentive payment to GPs by the government and will help them reach their Quality and Outcomes Framework targets. Practices in the control group will not receive support, but will not be required to perform any additional tasks. For individual patients, the intervention aims to increase uptake of influenza vaccine, which will offer protection against seasonal flu. Participating practices must spend time identifying eligible patients and sending a text message. We are reducing this burden in four ways. First, we are allowing practices to use established procedures and software to identify eligible patients for vaccination. This is a task that they would perform annually in non-study conditions. Second, we are including only practices that are familiar with the text messaging software, which minimises time spent in familiarisation with the software and sending messages. Third, additional support is available to any practice through a guidance document and dedicated support helpline (should the practice require this). Finally, we are providing an incentive payment to practices in the intervention group to encourage participation.
Practices may experience increased demand for influenza vaccination. Practices may therefore run out of vaccine supplies sooner than expected and may have to cope with additional demand for vaccination appointments. The increase is unlikely to be large and any increase will help the practice to achieve their Quality and Outcomes Framework target for vaccination, for which they receive payment.

Where is the study run from?
London School of Hygiene and Tropical Medicine (UK)

When is the study starting and how long is it expected to run for?
August 2013 to May 2014

Who is funding the study?
The Wellcome Trust (UK)

Who is the main contact?
Emily Herrett
emily.herrett@lshtm.ac.uk

Study website

Contact information

Dr Emily Herrett
Scientific

Keppel Street
London
WC1E 7HT
United Kingdom

ORCiD logoORCID ID 0000-0002-9425-644X
Email emily.herrett@lshtm.ac.uk

Study information

Study designRandomised interventional trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)GP practice
Study typeOther
Participant information sheet The practice information sheet is available at the following site: http://www.lshtm.ac.uk/eph/ncde/research/txt4flujabtrial/practice_information_sheet.pdf
Scientific titleA text messaging intervention to increase influenza vaccine uptake in patients aged under 65 in clinical risk groups: three feasibility trials in primary care
Study acronymTXT4FLUJAB
Study hypothesisInfluenza causes a substantial burden to the NHS and the UK as a whole. Influenza vaccine is safe and effective but is required annually. In 2012, the UK government recommended that at least 75% of elderly people (aged 65+) and 75% people under 65 with certain chronic conditions (e.g. Chronic heart disease, diabetes, asthma, etc) should be vaccinated. While primary care practices are achieving targets for the elderly, they are under-performing in patients with chronic conditions, missing a third of eligible patients in 2011/12. Therefore strategies to increase flu vaccine uptake in these patients are required.

Text messaging is already being used in some practices for flu vaccine reminders but there has been no trial assessing its effectiveness. Therefore, we propose a trial of a text message flu vaccine reminder in patients aged under 65 who have a chronic condition.

This study will randomise general practices to either standard care (seasonal flu campaign as planned), or to receive additional resources allowing them to send a targeted text messaging campaign to eligible patients aged under 65 and with a chronic condition. Vaccine uptake will be ascertained through the anonymised patient medical records.

More details can be found at: http://public.ukcrn.org.uk/search/StudyDetail.aspx?StudyID=14673
Ethics approval(s)Surrey Borders Ethics Committee approved on 10th July, ref: 13/LO/0872
ConditionTopic: Primary Care Research Network for England; Subtopic: Not Assigned; Disease: All Diseases
InterventionThis study will randomise general practices to either standard care (seasonal flu campaign as planned), or to receive additional resources.

Text message, Practices will be asked to send an influenza vaccine reminder text message to patients under 65 in clinical risk groups.

Follow Up Length: 9 months
Intervention typeBiological/Vaccine
Pharmaceutical study type(s)
PhaseNot Applicable
Drug / device / biological / vaccine name(s)
Primary outcome measureCurrent primary outcome measures as of 04/11/2015:
Proportion of patients who received flu vaccine; Timepoint(s): Up to 4 months

Previous primary outcome measures:
Recruitment rate; Timepoints: 3 months after initial contact
Secondary outcome measuresCurrent secondary outcome measures as of 04/11/2015:
1. Recruitment rate; Timepoints: 3 months after initial contact
2. Practice delivery of text message; Timepoint(s): One month after study start
3. Proportion of practices reporting yes to difficulties; Timepoint(s): Up to 3 months
4. Were outcome data available?; Timepoint(s): Up to 9 months

Previous secondary outcome measures:
1. Practice delivery of text message; Timepoint(s): One month after study start
2. Proportion of patients who received flu vaccine; Timepoint(s): Up to 9 months
3. Proportion of practices reporting yes to difficulties; Timepoint(s): Up to 3 months
4. Were outcome data available?; Timepoint(s): Up to 9 months
Overall study start date01/09/2013
Overall study end date31/05/2014

Eligibility

Participant type(s)Patient
Age groupSenior
SexBoth
Target number of participantsPlanned Sample Size: 60; UK Sample Size: 60
Participant inclusion criteria1. Practices must use text messaging software to communicate with patients
2. Practices must not have used a text message to remind patients aged under 65 about influenza vaccine in the 2012/13 influenza season
3. Practices will send the text message to eligible patients who are aged between 18 and 65, with one of the following risk conditions: chronic respiratory disease, chronic liver disease, chronic kidney disease, chronic heart disease, chronic neurological disease, immunosuppression
Participant exclusion criteriaPractices will not send the text message to pregnant women.
Recruitment start date02/09/2013
Recruitment end date18/10/2013

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

London School of Hygiene and Tropical Medicine
London
WC1E 7HT
United Kingdom

Sponsor information

London School of Hygiene and Tropical Medicine (UK)
University/education

Keppel Street
London
WC1E 7HT
England
United Kingdom

Website http://www.lshtm.ac.uk
ROR logo "ROR" https://ror.org/00a0jsq62

Funders

Funder type

Charity

Wellcome Trust (UK) grant ref no: 098504/Z/12/Z
Private sector organisation / International organizations
Location
United Kingdom

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
Publication and dissemination planOur trial protocol has been published. We are intending to publish the main trial results over the coming months. We will also disseminating a report to the practices involved in the trial, which will explain the results.
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 02/05/2014 Yes No
Results article results 19/02/2016 Yes No
HRA research summary 28/06/2023 No No

Editorial Notes

19/08/2019: ClinicalTrials.gov number added.
22/02/2016: Publication reference added.