Message Framing on Recruiting Rh-D Negative Blood Donors
NCT04484896
·
clinicaltrials.gov ↗
NA
Phase
UNKNOWN
Status
1082
Enrollment
OTHER_GOV
Sponsor class
Conditions
Blood Donation
Interventions
OTHER:
Gain-framed SMS message
OTHER:
Loss-framed SMS message
OTHER:
Information SMS message
Sponsor
Guangzhou Blood Center