ISRCTN ISRCTN10412338
DOI https://doi.org/10.1186/ISRCTN10412338
Submission date
24/10/2019
Registration date
24/10/2019
Last edited
14/05/2024
Recruitment status
No longer recruiting
Overall study status
Ongoing
Condition category
Other
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
The STRIDES study aims to reduce adverse events related to blood donation by implementing variations on the current interventions. Reducing adverse events is likely to increase donor retention and therefore the number of blood units donated for NHS patients. The study will include changes to the material read prior to donation, the drink consumed prior to donation and the advice given during and after the donation experience. All blood donors in England who attend a blood donation session during the study period will anonymously participate, with the option to opt-out. The results from this study will help inform national policies that should optimise blood collection procedures, minimise donor reactions, improve donor return rates, and improve donor (and staff) well-being and satisfaction. In addition to the main study, up to 250,000 donors will be asked if they wish to join the STRIDES BioResource, part of the NIHR BioResource. The STRIDES BioResource aims to provide additional biological (blood samples) and questionnaire data to address the overall aims of the STRIDES study

Who can participate?
Adults who attend an NHS blood donation clinic in England during the study period

What are the possible benefits and risks of participating?
There will be no immediate direct benefit to those taking part. But there should be benefits to future blood donors. The study’s results should yield evidence-based policies to reduce adverse events for NHSBT and other blood services; lead to improvements in donor health, experience, and service efficiency (e.g., better retention of donors, who may be more likely to give blood repeatedly). There are no additional risks to participating in the usual blood donation

Where is the study run from?
The STRIDES study is being run by the University of Cambridge and takes place in all NHSBT blood donation clinics across England

When is the study starting and how long is it expected to run for?
November 2019 until November 2029

Who is funding the study?
NHS Blood and Transplant team (NHSBT) (UK)

Who is the main contact?
1. Prof Emanuele Di Angelantonio
ed303@medschl.cam.ac.uk
2. Prof John Danesh
jd292@medschl.cam.ac.uk

Study website

Contact information

Prof Emanuele Di Angelantonio
Scientific

Strangeways Research Lab
Worts Causeway
Cambridge
CB1 8RN
United Kingdom

Phone +44 (0)1223748659
Email ed303@medschl.cam.ac.uk
Dr Amy McMahon
Scientific

Strangeways Research Lab
Worts Causeway
Cambridge
CB18RN
United Kingdom

Phone +44 (0)1223747228
Email am2663@medschl.cam.ac.uk

Study information

Study designCluster randomized crossover/stepped-wedge factorial trial
Primary study designInterventional
Secondary study designCluster randomised trial
Study setting(s)Other
Study typeOther
Participant information sheet http://www.strides-study.org.uk/about/pis/
Scientific titleStrategies to Improve Donor Experiences
Study acronymSTRIDES
Study hypothesisA single intervention or combination of interventions will improve donor experiences by reducing adverse events in and out of the blood donation session
Ethics approval(s)Approved 21/11/2018, East of England - Cambridge South Research Ethics Committee (The Old Chapel, Royal Standard Place, Nottingham, NG1 6FS; +44 (0)207 104 8134; NRESCommittee.EastofEngland-CambridgeSouth@nhs.net), ref: 18/EE/0284
ConditionBlood donor health
InterventionWe will compare four different interventions with current NHSBT practice:
1. Isotonic hydration before donation: 500ml isotonic drink vs. current 500ml plain water
2. Time on donation chair after donation: 3-minutes before standing vs. current 2-minutes
3. Modified applied muscle tension (AMT) exercises: new AMT vs. current practice of AMT
4. Psychosocial intervention: preparatory materials vs. current practice of nothing

The study design is tailored to the specific needs of our study and NHSBT: a cluster-randomised cross-over/stepped-wedge factorial trial involving the whole of NHSBT for 36 months. A minimisation algorithm was used to ensure that, when clusters are randomised to each intervention, balance is maintained in important stratifying factors

Depending on the intervention assigned:
1. In addition to the NHSBT welcome leaflet donors will be given a copy of the 2-sided STRIDES psychosocial leaflet, which will provide guidance of what to expect during and after donation, what to do while donating blood and advice
2. Instead of a 500ml glass of water/squash, donors will be asked to drink a 500ml low-sugar isotonic drink. A poster will be provided about the drink and the contents of the drink will be displayed
3. If donors are eligible to give blood, they will receive modified instructions for Applied Muscle Tension by way of a 1-page study-specific leaflet
4. If a donor is eligible to give blood, a donor’s time in the donation chair following blood donation will be increased from 2 to 3 minutes.
In addition, on arrival of a donor at the donation session, a member of the donation team will ask donors whether they would wish to consider participation in the BioResource. If the donor agrees they will be consented and additional blood samples will be taken from the satellite pouch during the donation. Once home, the donor will receive an email like to complete a health and lifestyle questionnaire to help address the main aims of the study. Anonymous data will be provided to the University of Cambridge by NHSBT
Intervention typeOther
Primary outcome measureNumber of in-session vasovagal reactions (VVRs) with loss of consciousness (i.e. episodes involving loss of consciousness of any duration, with or without additional complications) observed by NHSBT staff
Secondary outcome measures1. All in-session VVRs (i.e. with and without loss of consciousness)
2. All delayed VVRs (i.e. VVRs with and without loss of consciousness after leaving the donation venue)
3. Delayed VVRs with loss of consciousness; and
4. Any in-session non-VVR adverse events or reactions
Overall study start date23/04/2018
Overall study end date11/03/2029

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
SexBoth
Target number of participants1,300,000
Total final enrolment1381520
Participant inclusion criteriaAll donors attending the donation sites involved in the study
Participant exclusion criteriaDoes not meet inclusion criteria
Recruitment start date04/11/2019
Recruitment end date04/11/2022

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

NHS Blood and Transplant
NHS Blood and Transplant
Head Office
500 North Bristol Park
Filton
Bristol
BS34 7QH
United Kingdom

Sponsor information

NHS Blood and Transplant
Hospital/treatment centre

NHS Blood and Transplant
c/o Research Office
500 North Bristol Park
Filton
Bristol
BS34 7QH
England
United Kingdom

Phone +44 (0)117 921 7501
Email research.office@nhsbt.nhs.uk
ROR logo "ROR" https://ror.org/0227qpa16

Funders

Funder type

Hospital/treatment centre

NHS Blood and Transplant
Government organisation / Local government
Alternative name(s)
National Health Service Blood and Transplant, UK National Health Service Blood and Transplant, NHSBT
Location
United Kingdom
NIHR Blood and Transplant Research Unit

No information available

NIHR BioResource

No information available

Results and Publications

Intention to publish date30/11/2024
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planPlanned publication in a high-impact peer reviewed journal
IPD sharing planThe datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request. Anonymous participant level data will be available upon request and approval by the Data Access Committee for the study. Applications can be requested by contacting donorhealth@medschl.cam.ac.uk, 01223 747226. Only relevant information/variables will be provided and the whole data set is unlikely to be released.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Statistical Analysis Plan version 3 01/11/2022 22/12/2022 No No
HRA research summary 28/06/2023 No No
Protocol article 10/08/2023 14/08/2023 Yes No

Additional files

37348 STRIDES_SAP_v03_01Nov22.pdf

Editorial Notes

14/05/2024: The intention to publish date was changed from 30/11/2023 to 30/11/2024.
14/08/2023: Publication reference added.
22/12/2022: The following changes were made to the trial record:
1. The statistical analysis plan was uploaded as an additional file.
2. The total final enrolment was added.
3. The intention to publish date was changed from 11/03/2030 to 30/11/2023.
15/10/2020: The recruitment resumed.
16/04/2020: Due to current public health guidance, recruitment for this study has been paused.
24/10/2019: Trial’s existence confirmed by East of England - Cambridge South Research Ethics Committee