Message Framing on Recruiting Rh-D Negative Blood Donors

Guangzhou Blood Center

Status: Unknown

Conditions: Blood Donation

Treatments: Other: Loss-framed SMS message; Other: Gain-framed SMS message; Other: Information SMS message

Study type: Interventional

Funder types: Other

Identifiers

NCT04484896

Recruiting Rh-D- blood donors

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 22, 2020 blood stockpile of O-negative and A-negative in Guangzhou Blood Center reached the warning line, and we took measures for emergency recruitment. O-negative and A-negative blood donors whose last donation dates were between January 1, 2018 and December 31, 2019 were identified and randomly assigned to four groups. Three different recruitment text messages were send three groups. We observed the re-donation rates among four groups within one week.

Enrollment: 1,082 estimated patients

Sex: All

Ages: 18 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• O and A Rh- negative blood donors Last donations were between January 1, 2018 and December 31, 2019

Exclusion criteria

• With an obviously invalid phone number Serological results of the last donation were positive

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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1,082 participants in 4 patient groups

Gain-frame Message

Experimental group

Description:

Short messaging service (SMS) message: Dear group O/A Rh-D negative blood donor: Hello! The inventory of group O/A Rh-D negative blood product is low at present, but patients with such blood group are in urgent need of blood. If you can, please consider donating blood again to save lives. Thank you for your support. Please bring your identification (ID) card and show this message to our staff. Thank you.

Treatment:

Other: Gain-framed SMS message

Loss-frame Message

Experimental group

Description:

SMS message: Dear group O/A Rh-D negative blood donor: Hello! The inventory of group O/A Rh-D negative blood product is low at present, but patients with such blood group are in urgent need of blood. If you can, please consider donating blood again to prevent the loss of life. Thank you for your support. Please bring your ID card and show this message to our staff. Thank you.

Treatment:

Other: Loss-framed SMS message

Information Message

Experimental group

Description:

SMS message: Dear group O/A Rh-D negative blood donor: Hello! The inventory of group O/A Rh-D negative blood product is low at present, if you can, please consider donating blood again. Thank you for your support. Please bring your ID card and show this message to our staff. Thank you.

Treatment:

Other: Information SMS message

Control group

No Intervention group

Description:

Donors in this group were not received SMS reminders.