{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T08:19:19Z","timestamp":1780474759933,"version":"3.54.1"},"reference-count":31,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2015,3,25]],"date-time":"2015-03-25T00:00:00Z","timestamp":1427241600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"), the Wilhelm and Martina Lundgren Foundation, the \u00c5hl\u00e9n Foundation, the Frimurare Barnhus Foundation, the Byggm\u00e4stare Olle Engqvist Foundation,"},{"name":"Agreement concerning research and education of doctors","award":["ALFGBG-137601, ALFGBG-134631, ALFGBG-136431, ALFGBG-426411"],"award-info":[{"award-number":["ALFGBG-137601, ALFGBG-134631, ALFGBG-136431, ALFGBG-426411"]}]},{"name":"den Hjalmar Svensson","award":["HJSV2013014),"],"award-info":[{"award-number":["HJSV2013014),"]}]},{"name":"Lilla Barnets Fond (Foundation for research on newborn infants)","award":["(20120864"],"award-info":[{"award-number":["(20120864"]}]},{"DOI":"10.13039\/501100006310","name":"Swedish Medical Research Council","doi-asserted-by":"crossref","award":["(VR 2012-3500)"],"award-info":[{"award-number":["(VR 2012-3500)"]}],"id":[{"id":"10.13039\/501100006310","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Thethe Health & Medical Care Committee of the Regional Executive Board, Region V\u00e4stra G\u00f6taland","award":["VGFOUREG-306581"],"award-info":[{"award-number":["VGFOUREG-306581"]}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2015,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To evaluate cervical length in asymptomatic women with singleton pregnancies in the second trimester by means of transvaginal ultrasonography, and to examine the relation between cervical length and spontaneous preterm delivery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Observational, prospective study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>A university hospital and a county hospital in Western Sweden.<\/jats:p><\/jats:sec><jats:sec><jats:title>Population<\/jats:title><jats:p>A total of 2122 asymptomatic women with live singleton pregnancies without fetal anomalies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Cervical length was measured at between 16 and 23\u00a0weeks of gestation by means of transvaginal ultrasonography. Data were analysed using logistic regression analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>Cervical length in relation to spontaneous preterm delivery &lt;34\u00a0weeks (primary outcome) and &lt;37\u00a0weeks of gestation (secondary outcome).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eleven women had a cervical length of \u226425\u00a0mm (0.5%) and 73 women had a cervical length of \u226430\u00a0mm (3.4%). Spontaneous preterm delivery at &lt;34\u00a0weeks occurred in 22\/2061 women (1.1%) and at &lt;37\u00a0weeks in 87\/2061 women (4.2%). There was a significant association between cervical length and spontaneous preterm delivery at &lt;34\u00a0weeks (odds ratio 1.78; 95% confidence interval 1.19\u20132.65 for a decrease of cervical length by 5\u00a0mm) but no significant association at &lt;37\u00a0weeks.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The rate of short cervical length of \u226425\u00a0mm was lower than expected. The study confirmed the increased risk of spontaneous preterm delivery in women with a short cervix, although the analysis was based on only a few cases. In Sweden, a larger study is needed to evaluate the prevalence of short cervical length and the possible association with preterm delivery before universal screening can be recommended.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aogs.12622","type":"journal-article","created":{"date-parts":[[2015,3,3]],"date-time":"2015-03-03T08:27:09Z","timestamp":1425371229000},"page":"598-607","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":46,"title":["Transvaginal sonographic evaluation of cervical length in the second trimester of asymptomatic singleton pregnancies, and the risk of preterm delivery"],"prefix":"10.1111","volume":"94","author":[{"given":"Pihla","family":"Kuusela","sequence":"first","affiliation":[{"name":"Institute for Clinical Sciences Department of Obstetrics and Gynecology Sahlgrenska Academy University of Gothenburg Gothenburg 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