2,074
Participants
Start Date
July 18, 2018
Primary Completion Date
October 18, 2018
Study Completion Date
October 18, 2018
Gain-frame SMS
Emergency recruitment cell phone short messages that emphasizing donating blood can save patients' lives were sent to donors in this group.
Loss-frame SMS
Emergency recruitment cell phone short messages emphasizing that donating blood can prevent patients from death were sent to donors in this group.
Control SMS
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
Guangzhou Blood Center
OTHER_GOV