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The Victorian Infant Collaborative Study (VICS) in Australia has tracked detailed perinatal and developmental outcomes across four distinct EP\/ELBW birth cohorts: 1991\u20131992, 1997, 2005 and 2016\u20132017. Improvements in 2-year developmental outcomes were reported in the VICS 2016\u20132017\u2009cohort compared with previous eras; however, whether these improvements are sustained to school-age is not known. The aim of the follow-up study is to assess neurodevelopmental and respiratory outcomes at school-age in the VICS 2016\u20132017\u2009cohort and examine the effect of EP\/ELBW birth on school-age functioning across the VICS epochs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and analysis<\/jats:title>\n                    <jats:p>This is a follow-up of the VICS 2016\u20132017\u2009cohort, a prospective longitudinal cohort study of children born EP\/ELBW and a contemporaneous group of term-born controls born in the state of Victoria, Australia. Children were previously assessed at 2\u2009years\u2019 corrected age.<\/jats:p>\n                    <jats:p>Follow-up at 8\u20139 years\u2019 corrected age includes a comprehensive assessment of cognitive, motor, social and behavioural development and lung function.<\/jats:p>\n                    <jats:p>Follow-up at 8\u20139\u2009years\u2019 corrected age includes a comprehensive assessment of cognitive, motor, social and behavioural development and lung function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Ethics and dissemination<\/jats:title>\n                    <jats:p>The study has approval from the Royal Children\u2019s Hospital Human Research Ethics Committee, Melbourne, Australia. The findings will be disseminated via peer-reviewed journal publications, conference presentations, digital and print media and through parent support\/network groups.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2026-120087","type":"journal-article","created":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T11:14:40Z","timestamp":1783422880000},"page":"e120087","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Outcomes at school-age of children born extremely preterm or extremely low birth weight in Victoria, Australia: protocol for the 8\u20139 years follow-up of the prospective, longitudinal Victorian Infant Collaborative Study (VICS) 2016\u20132017 cohort"],"prefix":"10.1136","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5901-0455","authenticated-orcid":false,"given":"Jeanie L Y","family":"Cheong","sequence":"first","affiliation":[{"name":"Prematurity Research, Clinical 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