{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T20:35:55Z","timestamp":1761251755393},"reference-count":0,"publisher":"Georg Thieme Verlag KG","issue":"07","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Amer J Perinatol"],"published-print":{"date-parts":[[2018,6]]},"abstract":"<jats:p>\n            Objective\u2003To determine the effect of adopting sex or race\/ethnicity-specific birthweight curves on small-for-gestational age (SGA)-associated mortality rates for specific populations.<\/jats:p><jats:p>\n            Materials and Methods\u2003Analyzing 20,095,735 singleton pregnancies, we compared rates of perinatal death associated with SGA in distinct sex and racial\/ethnic groups when SGA was defined using nonspecific, sex-specific, and race\/ethnicity-specific birthweight curves.<\/jats:p><jats:p>\n            Results\u2003With use of a nonspecific birthweight curve, the rate of perinatal death was higher for SGA males (20.4\/1,000 [95% confidence interval (CI), 20.1, 20.7]) than SGA females [14.6\/1,000 (95% CI, 14.4, 14.8)]. With a sex-specific curve, this disparity was reduced, measuring 17.7\/1,000 (95% CI, 17.4, 17.9) for SGA males and 16.3\/1,000 (95% CI, 16.1, 16.6) for females. Using a nonspecific birthweight curve, perinatal death rates were higher for non-Hispanic blacks (20.4\/1,000 [95% CI, 20.0, 20.8]) than for all other racial\/ethnic groups (15.9\/1,000 [95% CI, 15.7, 16.1]). This difference increased with use of a race-specific birthweight curve: perinatal mortality was 29.7\/1,000 (95% CI, 29.0, 30.3) for SGA blacks and 14.7\/1,000 (95% CI, 14.6, 14.9) for all other racial\/ethnic groups.<\/jats:p><jats:p>\n            Conclusion\u2003Population-based differences in SGA-associated mortality are reduced with adoption of a sex-specific birthweight curve, but widen with use of a race\/ethnicity-specific curve. These findings highlight the importance of outcomes analysis in the selection of diagnostic criteria for SGA.<\/jats:p>","DOI":"10.1055\/s-0037-1608791","type":"journal-article","created":{"date-parts":[[2017,12,13]],"date-time":"2017-12-13T18:40:19Z","timestamp":1513190419000},"page":"695-702","source":"Crossref","is-referenced-by-count":2,"title":["Effect of Population-Specific Birthweight Curves on Disparities in Perinatal Mortality in Small-for-Gestational Age Pregnancies"],"prefix":"10.1055","volume":"35","author":[{"given":"Ashley","family":"Naimi","sequence":"first","affiliation":[{"name":"Department of Epidemiology, University of Pittsburgh School of Public Health, Pittsburgh, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacob","family":"Larkin","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2017,12,13]]},"container-title":["American Journal of Perinatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0037-1608791.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2018,5,11]],"date-time":"2018-05-11T18:31:28Z","timestamp":1526063488000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0037-1608791"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,12,13]]},"references-count":0,"journal-issue":{"issue":"07","published-online":{"date-parts":[[2018,5,11]]},"published-print":{"date-parts":[[2018,6]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0037-1608791","relation":{},"ISSN":["0735-1631","1098-8785"],"issn-type":[{"value":"0735-1631","type":"print"},{"value":"1098-8785","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,12,13]]}}}