# The Effect of Message Framing on Blood Donation-Study 1

> **NCT03741413** · NA · COMPLETED · sponsor: **Guangzhou Blood Center** · enrollment: 2074 (actual)

## Conditions studied

- Rh Negative Blood Donor

## Interventions

- **OTHER:** Gain-frame SMS
- **OTHER:** Loss-frame SMS
- **OTHER:** Control SMS

## Key facts

- **NCT ID:** NCT03741413
- **Lead sponsor:** Guangzhou Blood Center
- **Sponsor class:** OTHER_GOV
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2018-07-18
- **Primary completion:** 2018-10-18
- **Final completion:** 2018-10-18
- **Target enrollment:** 2074 (ACTUAL)
- **Last updated:** 2020-05-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03741413

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03741413, "The Effect of Message Framing on Blood Donation-Study 1". Retrieved via AI Analytics 2026-06-09 from https://api.ai-analytics.org/clinical/NCT03741413. Licensed CC0.

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