The Effect of Message Framing on Blood Donation-Study 1
Saving a Life or Preventing a Death: the Effect of Message Framing on Blood Donation Among Rh Negative Donors
1 other identifier
interventional
2,074
1 country
1
Brief Summary
Rh negative blood group is a rare blood group in China, as it only accounts for 0.3-0.4 percent of the Han population. Therefore, low inventory is often found in blood collection and supply agencies in many regions in China. On July 18, 2018 blood stockpile of O-negative and B-negative in Guangzhou Blood Center reached the warning line, and we took measures for emergency recruitment. O-negative and B-negative blood donors whose last donation dates were between January 1, 2015 and December 31, 2017 were identified and randomly assigned to three groups. Three different recruitment text messages were send to these groups respectively. At the same time, A-negative and AB-negative blood donors were marked as control group. We observed the re-donation rates among four groups within three months.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jul 2018
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 18, 2018
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 18, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
October 18, 2018
CompletedFirst Submitted
Initial submission to the registry
November 11, 2018
CompletedFirst Posted
Study publicly available on registry
November 14, 2018
CompletedMay 5, 2020
May 1, 2020
3 months
November 11, 2018
May 2, 2020
Conditions
Outcome Measures
Primary Outcomes (1)
Re-donation rate
Intention-to-treat were applied. Re-donation rate was defined as the number of donors in each group devided by donors who re-donated within 3 months.
3 months
Study Arms (4)
Gain-frame SMS
EXPERIMENTALSMS messages "Dear Rh negative blood donors: Hello! As the Rh negative O/B blood stockpile is low now, but patients who are this blood type are in urgent need. If you are available, we hope that you can offer a helping hand to save their lives. Thank you for your support." were send to donors in this group.
Loss-frame SMS
EXPERIMENTALSMS messages "Dear Rh negative blood donors: Hello! As the Rh negative O/B blood stockpile is low now, but patients who are this blood type are in urgent need. If you are available, we hope that you can offer a helping hand to prevent them from death. Thank you for your support." were send to donors in this group.
Control SMS
EXPERIMENTALSMS messages "Dear Rh negative blood donors: Hello! As the Rh negative O/B blood stockpile is low now, but patients who are this blood type are in urgent need. If you are available, we hope that you can donate blood again. Thank you for your support." were send to donors in this group.
Control group
NO INTERVENTIONDonors in this group were not received SMS reminders.
Interventions
Emergency recruitment cell phone short messages that emphasizing donating blood can save patients' lives were sent to donors in this group.
Emergency recruitment cell phone short messages emphasizing that donating blood can prevent patients from death were sent to donors in this group.
Emergency recruitment cell phone short messages that only mentioning the low Rh-negative blood stockpile were sent to donors in this group.
Eligibility Criteria
You may qualify if:
- Rh- negative blood donors whose last donations were between January 1, 2015 and December 31, 2017.
You may not qualify if:
- Donors with an obviously invalid phone number. Donors whose serological results of the last donation were positive.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Guangzhou Blood Center
Guangzhou, Guangdong, 510095, China
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- HEALTH SERVICES RESEARCH
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER GOV
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- MS
Study Record Dates
First Submitted
November 11, 2018
First Posted
November 14, 2018
Study Start
July 18, 2018
Primary Completion
October 18, 2018
Study Completion
October 18, 2018
Last Updated
May 5, 2020
Record last verified: 2020-05
Data Sharing
- IPD Sharing
- Will not share