{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T16:44:59Z","timestamp":1776530699030,"version":"3.51.2"},"reference-count":45,"publisher":"American Academy of Pediatrics (AAP)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,12,1]]},"abstract":"<jats:sec>\n                  <jats:title>OBJECTIVES:<\/jats:title>\n                  <jats:p>Using a large, racially diverse US dataset, we aimed primarily to: (1) fit and validate sex-specific birth weight and head circumference for gestational age charts for infants born at 22 to 29 weeks\u2019 gestation; and (2) fit race-specific birth weight and head circumference for gestational age charts.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>METHODS:<\/jats:title>\n                  <jats:p>We used data collected between 2006 and 2014 on 183\u2009243 singleton infants without congenital malformations with gestational age between 22 weeks, 0 days and 29 weeks, 6 days from 852 US members of the Vermont Oxford Network. For the sex-specific charts, the final sample size included 156\u2009587 infants who survived hospital discharge. From these 156\u2009587, we abstracted a subset of 47\u2009005 infants to fit sex-specific charts separately for white, black, and Asian infants. For all charts, we applied quantile regression models to predict infants\u2019 birth weight and head circumference percentiles from gestational age expressed in days.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>RESULTS:<\/jats:title>\n                  <jats:p>We successfully validated the overall sex-specific charts. Over most of the gestational age range, black infants, either girls or boys, had the lowest predicted birth weight as compared with white and Asian infants for many percentiles.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>CONCLUSIONS:<\/jats:title>\n                  <jats:p>We fitted and validated new sex-specific charts using a recent, large, and racially diverse dataset. Future steps include using these charts to examine associations of weight and head circumference at birth with mortality and morbidity.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1542\/peds.2016-1641","type":"journal-article","created":{"date-parts":[[2016,11,18]],"date-time":"2016-11-18T10:10:15Z","timestamp":1479463815000},"source":"Crossref","is-referenced-by-count":24,"title":["Anthropometric Charts for Infants Born Between 22 and 29 Weeks\u2019 Gestation"],"prefix":"10.1542","volume":"138","author":[{"given":"Nansi S.","family":"Boghossian","sequence":"first","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco","family":"Geraci","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erika M.","family":"Edwards","sequence":"additional","affiliation":[{"name":"Vermont Oxford Network, Burlington, Vermont; and"},{"name":"Department of Mathematics and Statistics, University of Vermont, Burlington, Vermont; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kate A.","family":"Morrow","sequence":"additional","affiliation":[{"name":"Vermont Oxford Network, Burlington, Vermont; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeffrey D.","family":"Horbar","sequence":"additional","affiliation":[{"name":"Vermont Oxford Network, Burlington, Vermont; and"},{"name":"Department of Pediatrics, University of Vermont College of Medicine, Burlington, Vermont"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"417","published-online":{"date-parts":[[2016,12,1]]},"reference":[{"issue":"6","key":"2021120905005431600_B1","doi-asserted-by":"crossref","first-page":"1019","DOI":"10.1542\/peds.2011-3028","article-title":"Mortality and neonatal morbidity among infants 501 to 1500 grams from 2000 to 2009.","volume":"129","author":"Horbar","year":"2012","journal-title":"Pediatrics"},{"issue":"3","key":"2021120905005431600_B2","doi-asserted-by":"crossref","first-page":"443","DOI":"10.1542\/peds.2009-2959","article-title":"Neonatal outcomes of extremely preterm infants from the NICHD Neonatal Research Network.","volume":"126","author":"Stoll","year":"2010","journal-title":"Pediatrics"},{"issue":"1 pt 1","key":"2021120905005431600_B3","doi-asserted-by":"crossref","first-page":"198","DOI":"10.1016\/S0002-9378(00)70513-8","article-title":"Morbidity and mortality among very-low-birth-weight neonates with intrauterine growth restriction.","volume":"182","author":"Bernstein","year":"2000","journal-title":"Am J Obstet Gynecol"},{"issue":"1","key":"2021120905005431600_B4","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/j.jpeds.2012.12.097","article-title":"Outcomes of small for gestational age infants born at &lt;27 weeks\u2019 gestation.","volume":"163","author":"De Jesus","year":"2013","journal-title":"J Pediatr"},{"issue":"4","key":"2021120905005431600_B5","doi-asserted-by":"crossref","DOI":"10.1542\/peds.2011-3846","article-title":"New reference curves for head circumference at birth, by gestational age.","volume":"131","author":"Barbier","year":"2013","journal-title":"Pediatrics"},{"key":"2021120905005431600_B6","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1186\/1471-2431-3-6","article-title":"A nearly continuous measure of birth weight for gestational age using a United States national reference.","volume":"3","author":"Oken","year":"2003","journal-title":"BMC Pediatr"},{"issue":"2","key":"2021120905005431600_B7","doi-asserted-by":"crossref","DOI":"10.1542\/peds.2009-0913","article-title":"New intrauterine growth curves based on United States data.","volume":"125","author":"Olsen","year":"2010","journal-title":"Pediatrics"},{"issue":"2","key":"2021120905005431600_B8","doi-asserted-by":"crossref","DOI":"10.1542\/peds.106.2.e21","article-title":"A new look at intrauterine growth and the impact of race, altitude, and gender.","volume":"106","author":"Thomas","year":"2000","journal-title":"Pediatrics"},{"key":"2021120905005431600_B9","unstructured":"Vermont Oxford Network\n          . 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