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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
1,082
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.
Guangzhou Blood Center
Guangzhou, Guangdong, China
RECRUITINGRe-donation rate
Intention-to-treat were applied. Re-donation rate was defined as the number of donors in each group divided by donors who re-donated within 7 days.
Time frame: 7 days
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