{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T01:18:16Z","timestamp":1788398296241,"version":"build-2803163510"},"reference-count":22,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T00:00:00Z","timestamp":1788307200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T00:00:00Z","timestamp":1788307200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vox Sanguinis"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Objectives<\/jats:title>\n                    <jats:p>To investigate the hierarchical structure of blood donation motivation based on self\u2010determination theory (SDT), specifically examining the associations between six regulatory styles\u2014spanning the spectrum from amotivation to intrinsic motivation\u2014and overall donor motivation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>A nationwide cross\u2010sectional study across 31 Iranian provinces enrolled 7187 potential donors (92.4% response rate). Motivation was assessed using the 24\u2010item Self\u2010Regulation of Blood Donation Scale. Multivariable linear mixed\u2010effects models, adjusted for demographic and behavioral confounders, were used for statistical analysis. Bonferroni\u2010corrected pairwise comparisons elucidated the hierarchy, and multiple imputation addressed missing data.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Adjusted mean scores differed significantly across all six regulatory styles (all pairwise\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). Scores increased progressively across the SDT continuum, from amotivation (adjusted mean\u2009=\u20091.58) to intrinsic motivation (adjusted mean\u2009=\u20094.43). Intrinsic motivation had the highest adjusted score, followed by integrated, identified, introjected, and external regulation. The difference between intrinsic motivation and amotivation was 2.865 points (95% confidence interval [CI]: 2.826\u20132.904). Adjustment for demographic and donation\u2010related characteristics produced minimal changes in the estimated differences. Sensitivity analyses using multiple imputation yielded comparable results.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Iranian blood donors demonstrated a clear motivational hierarchy consistent with the SDT continuum, with the highest scores observed for intrinsic and other autonomous forms of motivation. These findings support the utility of SDT for characterizing blood donation motivation in Iran and suggest that donor retention strategies may benefit from approaches that support autonomy and the internalization of personally and socially meaningful reasons for donation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/vox.70364","type":"journal-article","created":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T01:10:30Z","timestamp":1788397830000},"source":"Crossref","is-referenced-by-count":0,"title":["Motivational regulation for blood donation among Iranian blood donors: A nationwide mixed\u2010effects study based on self\u2010determination theory"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3414-9340","authenticated-orcid":false,"given":"Fahimeh","family":"Ranjbar Kermani","sequence":"first","affiliation":[{"name":"Blood Transfusion Research Center High Institute for Research and Education in Transfusion Medicine  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0441-9004","authenticated-orcid":false,"given":"Sedigheh","family":"Amini Kafi\u2010Abad","sequence":"additional","affiliation":[{"name":"Biological Products and Blood Safety Research Center High Institute for Research and Education in Transfusion Medicine  Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,2]]},"reference":[{"key":"e_1_2_9_2_1","unstructured":"Organization WH.Global status report on blood safety and availability 2021. 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