Evidence map›Paper›PMID 40396493›Full record

Observational studyAnnals of behavioral medicine : a publication of the Society of Behavioral Medicine2025

Outcome expectations and repeated blood donation behavior: a moderated mediation model in a prospective observational study.

Huahua Hu, Wei Hu, Joseph Tak Fai Lau, Qiuyue Hu, Yan Yan, Phoenix Kit Han Mo

Abstract readObservational Study
In one paragraph

Observational study in Annals of behavioral medicine : a publication of the Society of Behavioral Medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Huahua HuBlood Center of Zhejiang Province, Hangzhou, 310052, China.ORCID 0000-0002-0884-983X
Wei HuBlood Center of Zhejiang Province, Hangzhou, 310052, China.
Joseph Tak Fai LauPublic Mental Health Center, School of Mental Health, Wenzhou Medical University, Wenzhou, 325035, China.ORCID 0000-0003-2344-7107
Qiuyue HuBlood Center of Zhejiang Province, Hangzhou, 310052, China.
Yan YanBlood Center of Zhejiang Province, Hangzhou, 310052, China.
Phoenix Kit Han MoSchool of Public Health and Primary Care, The Chinese University of Hong Kong, 999077, Hong Kong.ORCID 0000-0001-9822-5424

Funding

Natural Science Fund of Zhejiang Province LY20G030003
6 · The paper itself

Abstract

backgroundSocial cognitive theory proposes outcome expectations as an important factor in behavior change and maintenance. However, it is unknown whether and how outcome expectations interact with prosocial traits in predicting repeated blood donation (RBD) behavior. PURPOSE: The current study aimed to test the prospective association between outcome expectations and RBD behavior and the roles of altruism and re-donation intention in this association.

methodsA total of 850 blood donors recruited from blood donation sites in Hangzhou, China, completed an online baseline survey. Their RBD behavior was captured by checking their blood donation records in the database of Blood Center of Zhejiang Province 6 months later.

resultsAnticipated physical benefits positively predicted RBD behavior, while anticipated physical harms negatively predicted it. Moderated mediation analyses showed that overall outcome expectations and anticipated physical benefits predicted more RBD behavior through increased re-donation intention, and this effect was moderated by altruism. Specifically, the positive effect of overall outcome expectations and anticipated physical benefits on re-donation intention was stronger among donors with lower levels of altruism. Overall outcome expectations and anticipated physical benefits were found to have a significant impact on RBD behavior only in donors with lower levels of altruism.

conclusionsThe findings suggest that interventions aimed at promoting RBD behavior should seek to enhance re-donation intention, overall outcome expectations, and altruism. In particular, it is important to increase the overall outcome expectations-especially anticipated physical benefits-of donors with lower levels of altruism.

Indexed as

AltruismBlood DonorsIntentionOutcome ExpectationsAdultBlood DonationChinaFemaleHumansMaleMediation AnalysisMiddle AgedProspective StudiesYoung Adultaltruismanticipated physical benefitsmoderated mediationoutcome expectationsre-donation intentionrepeated blood donation behavior

Identifiers

PMID40396493
PMCPMC12169329

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.