Blood Donation and Subjective Well-being

Guangzhou Blood Center

Status: Completed

Conditions: Happiness; Blood Donation

Treatments: Other: Information

Study type: Interventional

Funder types: Other

Identifiers

NCT05213130

Blood donation and well-being

Details and patient eligibility

About

This study investigates the psychological effects of blood donation among adult donors at the Guangzhou Blood Center. The primary objective is to examine whether a brief gratitude-based intervention delivered after donation enhances donors' subjective well-being (SWB) and basic psychological need (BPN) satisfaction. Participants who complete a whole-blood donation are randomly assigned to either an Intervention group, receiving a standardized gratitude reinforcement message accompanied by a vignette emphasizing the life-saving impact of donation, or a Control group that receives no additional message. All participants complete questionnaires at Time 1 (immediately after donation) and at Time 2 (4-22 days later), assessing SWB and related psychosocial variables.

Enrollment: 601 patients

Sex: All

Ages: 18 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Successfully completed a whole-blood donation at the Guangzhou Blood Center during the study period.
• Able to read and understand the study materials and provide informed consent.
• Provided the correct answer to a control question in the questionnaire
• Provided their phone number.
• Donated blood was successfully supplied to the hospitals.

Exclusion criteria

• Whole blood donors with positive or suspicious serological results.

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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601 participants in 2 patient groups

Gratitude-based intervention

Experimental group

Description:

Participants in this group receive a standardized gratitude-based intervention immediately after completing whole-blood donation. The intervention consists of (1) a written gratitude reinforcement message acknowledging the donor's contribution and emphasizing the life-saving impact of their donation, and (2) a brief vignette illustrating how donated blood benefits patients in need. The purpose of this intervention is to enhance donors' subjective well-being and psychological need satisfaction by reinforcing their sense of autonomy, competence, and relatedness. Participants complete questionnaires at Time 1 (post-donation) and Time 2 (4-22 days later).

Treatment:

Other: Information

No Message

No Intervention group

Description:

Participants in this group complete the standard post-donation procedure and receive no additional message or vignette. They complete the same questionnaires at Time 1 (post-donation) and Time 2 (4-22 days later) as the Intervention group. This arm serves as the comparison condition for evaluating the effect of the gratitude-based intervention on subjective well-being and related psychosocial outcomes.