# The Effect of Message Framing on Blood Donation-Study 2

> **NCT03741387** · NA · COMPLETED · sponsor: **Guangzhou Blood Center** · enrollment: 795 (actual)

## Conditions studied

- Rh Negative Blood Donor

## Interventions

- **OTHER:** Gain-frame questionnaire
- **OTHER:** Loss-frame questionnaire

## Key facts

- **NCT ID:** NCT03741387
- **Lead sponsor:** Guangzhou Blood Center
- **Sponsor class:** OTHER_GOV
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-03-15
- **Primary completion:** 2019-03-21
- **Final completion:** 2019-03-21
- **Target enrollment:** 795 (ACTUAL)
- **Last updated:** 2019-03-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03741387

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03741387, "The Effect of Message Framing on Blood Donation-Study 2". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT03741387. Licensed CC0.

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