{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T17:12:35Z","timestamp":1790097155316,"version":"4.0.1"},"reference-count":40,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T00:00:00Z","timestamp":1789776000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T00:00:00Z","timestamp":1789776000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Sydney Cancer Institute","award":["Seed Grant 2022 (Pearce)"],"award-info":[{"award-number":["Seed Grant 2022 (Pearce)"]}]},{"DOI":"10.13039\/501100001774","name":"University of Sydney","doi-asserted-by":"publisher","award":["External Engagement Seed Grant 2024 (Pearce)"],"award-info":[{"award-number":["External Engagement Seed Grant 2024 (Pearce)"]}],"id":[{"id":"10.13039\/501100001774","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001026","name":"national breast cancer foundation","doi-asserted-by":"publisher","award":["2023\/IIRS0028, EC-21-001"],"award-info":[{"award-number":["2023\/IIRS0028, EC-21-001"]}],"id":[{"id":"10.13039\/501100001026","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000925","name":"national health and medical research council","doi-asserted-by":"publisher","award":["1194410"],"award-info":[{"award-number":["1194410"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Med Decis Making"],"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Discrete-choice experiments (DCEs) are valuable in establishing health preferences. However, their repetitive nature may cause dropouts.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aim:<\/jats:title>\n                    <jats:p>Does an encouraging \u2018giddy-up\u2019 message improve completion rates, data quality and respondent experience?<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design:<\/jats:title>\n                    <jats:p>Two online DCEs in Australia: 1) breast cancer screening (women aged 40\u201375 y) and 2) arm therapy (stroke survivors aged &gt;18 y). We randomised participants to see 10 to 12 choice sets continuously or with a social exchange theory\u2013based giddy-up message halfway. Conditional binomial statistics compared dropout rates as our primary outcome. Secondary outcomes included completion time, difficulty and preference consistency.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      From 867 screening and 333 stroke respondents, the dropout rates were 7% and 28%, respectively. Among those who completed &gt;50% of the choice sets, there was no significant difference in dropout rates between arms (screening: 1.5% control, 0.75% giddy-up,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.35; stroke: 1.7% control, 4.1% giddy-up,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.30). There were no significant differences in secondary outcomes, except in the screening survey, in which the giddy-up reduced difficulty (5% vs 2%,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.03) and improved understanding (18% vs 12%,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.01).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>A DCE giddy-up message appears to have little impact on completion, although it may make the survey feel easier to complete.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Implications:<\/jats:title>\n                    <jats:p>A giddy-up message is unlikely to be useful in online, adult DCEs.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0272989x261473873","type":"journal-article","created":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T10:56:07Z","timestamp":1789815367000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Giddy up! Can We Reduce Dropouts in a Discrete-Choice Experiment by Including an Encouraging Message? A Randomised Trial"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5690-9542","authenticated-orcid":false,"given":"Alison","family":"Pearce","sequence":"first","affiliation":[{"name":"Daffodil Centre, The University of Sydney, a partnership with Cancer Council New South Wales, Sydney, Australia"},{"name":"Sydney School of Public Health, The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7998-7431","authenticated-orcid":false,"given":"Lazaros","family":"Andronis","sequence":"additional","affiliation":[{"name":"Centre for Health Economics at Warwick, Warwick Medical School, University of Warwick, Coventry, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4900-5614","authenticated-orcid":false,"given":"Lauren J.","family":"Christie","sequence":"additional","affiliation":[{"name":"Allied Health Research Unit, St Vincent\u2019s Health Network Sydney, Darlinghurst, Australia"},{"name":"School of Allied Health, Faculty of Health Sciences, Australian Catholic University, North Sydney, Australia"},{"name":"Nursing Research Institute, St Vincent\u2019s Health Network Sydney, St Vincent\u2019s Hospital Melbourne and Australian Catholic University, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Fearn","sequence":"additional","affiliation":[{"name":"School of Health Sciences, The University of Sydney, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helen M. L.","family":"Frazer","sequence":"additional","affiliation":[{"name":"St Vincent\u2019s Hospital Melbourne, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3641-952X","authenticated-orcid":false,"given":"Nehmat","family":"Houssami","sequence":"additional","affiliation":[{"name":"Daffodil Centre, The University of Sydney, a partnership with Cancer Council New South Wales, Sydney, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3801-8180","authenticated-orcid":false,"given":"M. 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