{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T12:24:15Z","timestamp":1793276655388,"version":"4.5.0"},"reference-count":0,"publisher":"Georg Thieme Verlag KG","issue":"09","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Amer J Perinatol"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:p>\n            Background\u2003Twin birthweight discordance is associated with adverse outcomes.<\/jats:p><jats:p>\n            Objective\u2003To determine what degree of twin birthweight discordance is associated with adverse outcomes.<\/jats:p><jats:p>\n            Study Design\u2003This is a retrospective cohort study of twins with vertex twin A delivered vaginally at 36 to 40 weeks (U.S. Vital Statistics Natality birth certificate registry data 2012\u20132014). The primary outcome was a composite of neonatal morbidity: 5-minute Apgar\u2009&lt;\u20097, neonatal intensive care unit admission, neonatal mechanical ventilation\u2009&gt;\u20096 hours, neonatal seizure, and\/or neonatal transport to a higher level of care. Effect estimates were expressed as incidence rate and adjusted odds ratio (aOR) controlling for confounding using multivariate clustered analysis for between-pair effects, and multilevel random effect generalized estimating equation regressions to account for within-pair effects. We adjusted for sex discordance, breech delivery of the second twin, maternal race\/ethnicity, nulliparity, age, marital status, obesity, and socioeconomic status.<\/jats:p><jats:p>\n            Results\u2003In comparison to birthweight discordance of \u226420%, aORs with 95% confidence intervals (CIs) by weight discordance of the primary outcome among 27,276 twin deliveries were as follows: 20.01 to 25% (aOR: 1.46 [95% CI: 1.29\u20131.65]); 25.01 to 30% (aOR: 1.96 [95% CI: 1.68\u20132.29]); and 30.01 to 60% (aOR: 2.97 [95% CI: 2.52\u20133.50]).<\/jats:p><jats:p>\n            Conclusion\u2003Twin birthweight discordance &gt;20% was associated with increased odds of adverse neonatal outcome.<\/jats:p>","DOI":"10.1055\/s-0038-1675769","type":"journal-article","created":{"date-parts":[[2018,11,26]],"date-time":"2018-11-26T23:52:27Z","timestamp":1543276347000},"page":"969-974","source":"Crossref","is-referenced-by-count":16,"title":["Association between the Degree of Twin Birthweight Discordance and Perinatal Outcomes"],"prefix":"10.1055","volume":"36","author":[{"given":"Lena H.","family":"Kim","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine, California Pacific Medical Center, San Francisco, California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aaron B.","family":"Caughey","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, Oregon"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lynn M.","family":"Yee","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yvonne W.","family":"Cheng","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine, California Pacific Medical Center, San Francisco, California"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2018,11,26]]},"container-title":["American Journal of Perinatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0038-1675769.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,7,29]],"date-time":"2019-07-29T10:22:49Z","timestamp":1564395769000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0038-1675769"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,11,26]]},"references-count":0,"journal-issue":{"issue":"09","published-online":{"date-parts":[[2019,7,15]]},"published-print":{"date-parts":[[2019,7]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0038-1675769","relation":{},"ISSN":["0735-1631","1098-8785"],"issn-type":[{"value":"0735-1631","type":"print"},{"value":"1098-8785","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,11,26]]}}}