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The guideline evidence synthesis, however, highlighted the dearth of high-quality evidence, particularly from large-scale studies. The Sleep and Activity Database for the Early Years (SADEY) project aims to assemble a large, pooled database of 24-hour movement behaviours and health indicators in young children (birth to 5.99 years), to advance knowledge in these areas. This paper describes the SADEY design and methods.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Data sets were identified with &gt;\u2009100 children and device-measured (hip-worn ActiGraph accelerometers) physical activity and sedentary behaviour, parent-reported or device-measured sleep, and at least one health outcome: physical (BMI, waist circumference, blood pressure), social-emotional (Strength and Difficulties Questionnaire), cognitive (Early Years Toolbox), or motor development (Test of Gross Motor Development 2). Led by the University of Wollongong co-ordinating centre, the SADEY project collates the datasets to create a pooled database.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Findings<\/jats:title>\n                <jats:p>To date, 13 studies from 7 countries have been included in the database. Ethics clearance and data sharing agreements have been secured for all studies and the SADEY 1.0 database is being assembled including\u2009~\u20098,000 participants.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Discussion<\/jats:title>\n                <jats:p>SADEY will be used to address questions of global importance to public health policy and practice, for example \u2013 <jats:italic>Is the mix of movement behaviours across the 24-hour day associated with healthy development?, What is the optimal mix of these behaviours?<\/jats:italic>, and; <jats:italic>What factors can be targeted to support young children in achieving the optimal mix of 24-hour movement behaviours?<\/jats:italic> Additionally, SADEY seeks to develop and disseminate protocols, develop capacity on the device-based measurement of movement behaviours, and seeks partnerships with stakeholders that promote knowledge translation on movement behaviours to support healthy development among young children.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s44167-024-00054-8","type":"journal-article","created":{"date-parts":[[2024,6,18]],"date-time":"2024-06-18T03:46:42Z","timestamp":1718682402000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["The sleep and activity database for the early years (SADEY) study: design and methods"],"prefix":"10.1186","volume":"3","author":[{"given":"Dylan P.","family":"Cliff","sequence":"first","affiliation":[]},{"given":"Devan","family":"Antczak","sequence":"additional","affiliation":[]},{"given":"Catherine E.","family":"Draper","sequence":"additional","affiliation":[]},{"given":"Timothy","family":"Olds","sequence":"additional","affiliation":[]},{"given":"Rute","family":"Santos","sequence":"additional","affiliation":[]},{"given":"Diego Augusto Santos","family":"Silva","sequence":"additional","affiliation":[]},{"given":"Mark S.","family":"Tremblay","sequence":"additional","affiliation":[]},{"given":"Esther M.F.","family":"van Sluijs","sequence":"additional","affiliation":[]},{"given":"Byron","family":"Kemp","sequence":"additional","affiliation":[]},{"given":"Eivind","family":"Aadland","sequence":"additional","affiliation":[]},{"given":"Katrine","family":"Aadland","sequence":"additional","affiliation":[]},{"given":"Thayna Alves","family":"Bezerra","sequence":"additional","affiliation":[]},{"given":"Jade","family":"Burley","sequence":"additional","affiliation":[]},{"given":"Valerie","family":"Carson","sequence":"additional","affiliation":[]},{"given":"Hayley E.","family":"Christian","sequence":"additional","affiliation":[]},{"given":"Marieke","family":"De Craemer","sequence":"additional","affiliation":[]},{"given":"Katherine","family":"Downing","sequence":"additional","affiliation":[]},{"given":"Kylie D.","family":"Hesketh","sequence":"additional","affiliation":[]},{"given":"Rachel A.","family":"Jones","sequence":"additional","affiliation":[]},{"given":"Nicholas","family":"Kuzik","sequence":"additional","affiliation":[]},{"given":"Reetta","family":"Lehto","sequence":"additional","affiliation":[]},{"given":"Clarice","family":"Martins","sequence":"additional","affiliation":[]},{"given":"Jorge","family":"Mota","sequence":"additional","affiliation":[]},{"given":"Andrea","family":"Nathan","sequence":"additional","affiliation":[]},{"given":"Anthony D.","family":"Okely","sequence":"additional","affiliation":[]},{"given":"Eva","family":"Roos","sequence":"additional","affiliation":[]},{"given":"Eduarda","family":"Sousa-S\u00e1","sequence":"additional","affiliation":[]},{"given":"Susana","family":"Vale","sequence":"additional","affiliation":[]},{"given":"Sandra","family":"Wiebe","sequence":"additional","affiliation":[]},{"given":"Ian","family":"Janssen","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,6,18]]},"reference":[{"key":"54_CR1","doi-asserted-by":"crossref","first-page":"252","DOI":"10.26582\/k.49.2.14","volume":"49","author":"Z Pedisic","year":"2017","unstructured":"Pedisic Z, Dumuid D, Olds T. 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Int J Behav Nutr Phys Act. 2016;13:1. https:\/\/doi.org\/10.1186\/s12966-015-0325-y.","journal-title":"Int J Behav Nutr Phys Act"}],"container-title":["Journal of Activity, Sedentary and Sleep Behaviors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s44167-024-00054-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s44167-024-00054-8\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s44167-024-00054-8.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,6,18]],"date-time":"2024-06-18T03:50:29Z","timestamp":1718682629000},"score":1,"resource":{"primary":{"URL":"https:\/\/jassb.biomedcentral.com\/articles\/10.1186\/s44167-024-00054-8"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,6,18]]},"references-count":46,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2024,12]]}},"alternative-id":["54"],"URL":"https:\/\/doi.org\/10.1186\/s44167-024-00054-8","relation":{},"ISSN":["2731-4391"],"issn-type":[{"value":"2731-4391","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,6,18]]},"assertion":[{"value":"15 May 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"7 June 2024","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 June 2024","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The SADEY project was approved by the University of Wollongong Health and Medical Human Research Ethics Committee (2021\/249). The studies included in the SADEY database were also ethically approved as follows: ACTNOW - Institutional Ethics Committee and the Norwegian Centre for Research Data - #248220; DAGIS - University of Helsinki Ethical Review Board (#6\/2015); GET-UP - University of Wollongong Human Research Ethics Committee (HE15\/236); HAPPY - Deakin University Human Research Ethics Committee (EC291\u20132007) and the Victorian Department of Education and Early Childhood Development; Jump Start - University of Wollongong Human Research Ethics Committee (HE14\/137); Movement\u2019s Cool - The Research Ethics Committee of the Health Science Center and the local board of education (protocol n. 2.727.698); PACE - University of Alberta Human Research Ethics Board (00045567); PATH ABC - University of Wollongong Health and Medical Human Research Ethics Committee - #HE14\/310); PLAYCE - The University of Western Australia Human Ethics Research Committee (RA\/4\/1\/7417); PREPS - University of Alberta Human Research Ethics Board (00050165); PRESTYLE - The Portuguese Foundation for Science and Technology and the Scientific Board of the Physical Activity and Health doctoral program; PROXDEV - University of Alberta Human Research Ethics Board (00081175); TOYBOX - Ethics Committee of the University Hospital of Ghent (EC\/2010\/037).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"The authors declare no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"15"}}