The Effect of Message Framing on Blood Donation-Study 1

Guangzhou Blood Center

Status: Completed

Conditions: Rh Negative Blood Donor

Treatments: Other: Gain-frame SMS; Other: Control SMS; Other: Loss-frame SMS

Study type: Interventional

Funder types: Other

Identifiers

NCT03741413

Message framing effect

Details and patient eligibility

About

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.

Enrollment: 2,074 patients

Sex: All

Ages: 18 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Rh- negative blood donors whose last donations were between January 1, 2015 and December 31, 2017.

Exclusion criteria

• Donors with an obviously invalid phone number. Donors whose serological results of the last donation were positive.

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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2,074 participants in 4 patient groups

Gain-frame SMS

Experimental group

Description:

SMS 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.

Treatment:

Other: Gain-frame SMS

Loss-frame SMS

Experimental group

Description:

SMS 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.

Treatment:

Other: Loss-frame SMS

Control SMS

Experimental group

Description:

SMS 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.

Treatment:

Other: Control SMS

Control group

No Intervention group

Description:

Donors in this group were not received SMS reminders.