{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,8]],"date-time":"2026-11-08T00:44:26Z","timestamp":1794098666629,"version":"4.8.0"},"reference-count":22,"publisher":"Korean Society of Obstetrics and Gynecology","issue":"1","license":[{"start":{"date-parts":[[2022,11,29]],"date-time":"2022-11-29T00:00:00Z","timestamp":1669680000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["ogscience.org"],"crossmark-restriction":true},"short-container-title":["Obstet Gynecol Sci"],"published-print":{"date-parts":[[2023,1,15]]},"abstract":"<jats:p>Objective The aim of this study was to evaluate the changes in twin pregnancy outcomes between 2007 and 2016 in a Korean population.Methods The data for this nationwide population-based study was obtained from the national birth registry of the Korean National Statistical Office and the Health Insurance Review &amp; Assessment Service of Korea. Women with twin pregnancies who gave birth between 2007 and 2016 were included.Results From 2007 to 2016, the rate of twin pregnancies increased (1.37% vs. 1.91%, respectively, &lt;i&gt;P&lt;\/i&gt;&lt;0.0001). The risk of preterm birth (adjusted odds ratio [aOR], 1.77; 95% confidence interval [CI], 1.66-1.89) also increased; however, the risk of twin growth discordance (aOR, 0.90; 95% CI, 0.82-0.99) decreased. The risks of cesarean section (aOR, 1.16; 95% CI, 1.03-1.29), gestational diabetes mellitus (aOR, 2.10; 95% CI, 1.83-2.39), and postpartum hemorrhage (aOR, 1.27; 95% CI, 1.14-1.41) all increased from 2007 to 2016.Conclusion Twin pregnancy outcomes have changed significantly in Korea over a recent 10-year period.<\/jats:p>","DOI":"10.5468\/ogs.22232","type":"journal-article","created":{"date-parts":[[2022,11,29]],"date-time":"2022-11-29T08:03:08Z","timestamp":1669708988000},"page":"20-25","update-policy":"https:\/\/doi.org\/10.5468\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Pregnancy outcomes in twin pregnancies over 10 years"],"prefix":"10.5468","volume":"66","author":[{"given":"Junghyun","family":"Jee","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Su Jung","family":"Hong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sungyeon","family":"Ha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ho Yeon","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ki Hoon","family":"Ahn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soon-Cheol","family":"Hong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Min-Jeong","family":"Oh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai-Joong","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6761-0944","authenticated-orcid":true,"given":"Geum Joon","family":"Cho","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3425","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.jp.7211224"},{"key":"ref2","first-page":"795","volume-title":"Twin pregnancy, complications and treatment","author":"Powers","year":"1973"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1016\/j.bpobgyn.2004.04.007"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1728-4457.2015.00088.x"},{"key":"ref5","first-page":"1","volume-title":"Births: final data for 2019","author":"Martin","year":"2021"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.3346\/jkms.2010.25.8.1191"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.21032\/jhis.2019.44.4.427"},{"key":"ref8","volume-title":"","author":"Hwang","year":"2018"},{"key":"ref9","volume-title":"","author":"Hwang","year":"2013"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.3346\/jkms.2018.33.e103"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1038\/s41598-022-12149-w"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.21032\/jhis.2017.42.1.10"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.5468\/ogs.2014.57.6.436"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1097\/01.aog.0000297311.33046.73"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1016\/j.clp.2011.06.009"},{"key":"ref16","first-page":"10","volume-title":"Late preterm birth","author":"Loftin","year":"2010"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2006.01180.x"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.2337\/dc17-2227"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1186\/s12884-018-1845-7"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2019-029908"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1515\/jpm-2012-0175"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.5468\/ogs.19212"}],"container-title":["Obstetrics &amp; Gynecology Science"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.ogscience.org\/upload\/pdf\/ogs-22232.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/www.ogscience.org\/journal\/view.php?doi=10.5468\/ogs.22232","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/www.ogscience.org\/upload\/pdf\/ogs-22232.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,1,18]],"date-time":"2023-01-18T05:53:04Z","timestamp":1674021184000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.ogscience.org\/journal\/view.php?doi=10.5468\/ogs.22232"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,15]]},"references-count":22,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2023,1]]}},"URL":"https:\/\/doi.org\/10.5468\/ogs.22232","relation":{},"ISSN":["2287-8580"],"issn-type":[{"value":"2287-8580","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,1,15]]},"assertion":[{"value":"2022-08-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-11-06","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-11-29","order":2,"name":"published","label":"Published online","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-01-15","order":3,"name":"published","label":"Print publication","group":{"name":"publication_history","label":"Publication History"}}]}}