# Message Framing on Recruiting Rh-D Negative Blood Donors

> **NCT04484896** · NA · UNKNOWN · sponsor: **Guangzhou Blood Center** · enrollment: 1082 (estimated)

## Conditions studied

- Blood Donation

## Interventions

- **OTHER:** Gain-framed SMS message
- **OTHER:** Loss-framed SMS message
- **OTHER:** Information SMS message

## Key facts

- **NCT ID:** NCT04484896
- **Lead sponsor:** Guangzhou Blood Center
- **Sponsor class:** OTHER_GOV
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2020-07-22
- **Primary completion:** 2020-07-29
- **Final completion:** 2020-07-30
- **Target enrollment:** 1082 (ESTIMATED)
- **Last updated:** 2020-07-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04484896

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04484896, "Message Framing on Recruiting Rh-D Negative Blood Donors". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04484896. Licensed CC0.

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