{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T10:05:16Z","timestamp":1784109916136,"version":"3.55.0"},"reference-count":3,"publisher":"BMJ","issue":"8","funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","award":["606789; 546519; 1060733; 1153176; 1104300; 2016390"],"award-info":[{"award-number":["606789; 546519; 1060733; 1153176; 1104300; 2016390"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012737","name":"Department of Health, State Government of Victoria","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100012737","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Thorax"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:p>Expiratory airflow was measured by spirometry at ages 8 years, 18 years and 25 years in 297 survivors born extremely preterm (EP; &lt;28 weeks\u2019 gestation) or extremely low birth weight (ELBW; &lt;1000\u2009g) and 260 normal birth weight (&gt;2499\u2009g) controls. At 8 years, expiratory airflows were similar between males and females in both EP\/ELBW and control groups. Worsening expiratory airflows with increasing age were noted in the EP\/ELBW group but not controls. Specifically, males born EP\/ELBW had z-scores for forced expired volume in 1\u2009s which were lower by a mean of \u22120.17 SD per decade (95% CI \u22120.27 to \u20130.07), p=0.001.<\/jats:p>","DOI":"10.1136\/thorax-2024-222790","type":"journal-article","created":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T18:20:28Z","timestamp":1766600428000},"page":"791-793","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Sex differences in expiratory airflow among survivors born before 28 weeks\u2019 gestation or under 1000 g birthweight, and normal birthweight controls"],"prefix":"10.1136","volume":"81","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7667-7312","authenticated-orcid":false,"given":"Lex William","family":"Doyle","sequence":"first","affiliation":[{"name":"Newborn Research, The Royal Women\u2019s Hospital, Parkville, Victoria, Australia"},{"name":"Department of Obstetrics, Gynaecology, and Newborn Health, The University of Melbourne, Parkville, Victoria, Australia"},{"name":"Clinical Sciences, Murdoch Children\u2019s Research Institute, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anjali","family":"Haikerwal","sequence":"additional","affiliation":[{"name":"Clinical Sciences, Murdoch Children\u2019s Research Institute, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5933-8917","authenticated-orcid":false,"given":"Rheanna M","family":"Mainzer","sequence":"additional","affiliation":[{"name":"Clinical Epidemiology and Biostatistics Unit, Murdoch Children\u2019s Research Institute, Parkville, Victoria, Australia"},{"name":"Paediatrics, University of Melbourne, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarath","family":"Ranganathan","sequence":"additional","affiliation":[{"name":"Paediatrics, University of Melbourne, Parkville, Victoria, Australia"},{"name":"Thoracic Medicine, Royal Childrens Hospital, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5901-0455","authenticated-orcid":false,"given":"Jeanie","family":"Cheong","sequence":"additional","affiliation":[{"name":"Newborn Research, The Royal Women\u2019s Hospital, Parkville, Victoria, Australia"},{"name":"Department of Obstetrics, Gynaecology, and Newborn Health, The University of Melbourne, Parkville, Victoria, Australia"},{"name":"Clinical Sciences, Murdoch Children\u2019s Research Institute, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2025,12,24]]},"reference":[{"key":"2026071502151565000_81.8.791.1","doi-asserted-by":"publisher","DOI":"10.1136\/thoraxjnl-2019-213757"},{"key":"2026071502151565000_81.8.791.2","doi-asserted-by":"crossref","first-page":"2035","DOI":"10.1002\/ppul.26428","article-title":"Lung function at 16-19 years in males and females born very prematurely","volume":"58","author":"Harris","year":"2023","journal-title":"Pediatr Pulmonol"},{"key":"2026071502151565000_81.8.791.3","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.00080312"}],"container-title":["Thorax"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/thorax-2024-222790","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T09:15:39Z","timestamp":1784106939000},"score":1,"resource":{"primary":{"URL":"https:\/\/thorax.bmj.com\/lookup\/doi\/10.1136\/thorax-2024-222790"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,24]]},"references-count":3,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2026,7,15]]},"published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1136\/thorax-2024-222790"],"URL":"https:\/\/doi.org\/10.1136\/thorax-2024-222790","relation":{},"ISSN":["0040-6376","1468-3296"],"issn-type":[{"value":"0040-6376","type":"print"},{"value":"1468-3296","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,24]]}}}