{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T20:11:02Z","timestamp":1792008662288,"version":"4.4.0"},"reference-count":15,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2007,5,16]],"date-time":"2007-05-16T00:00:00Z","timestamp":1179273600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2007,6]]},"abstract":"<jats:p><jats:bold>Objectives\u2002<\/jats:bold> To describe a 10\u2010year trend in preterm birth.<\/jats:p><jats:p><jats:bold>Design\u2002<\/jats:bold> Population\u2010based study.<\/jats:p><jats:p><jats:bold>Setting\u2002<\/jats:bold> Australia.<\/jats:p><jats:p><jats:bold>Population\u2002<\/jats:bold> All women who gave birth during 1994\u201303.<\/jats:p><jats:p><jats:bold>Methods\u2002<\/jats:bold> The proportion of spontaneous preterm births (greater than or equal to 22 weeks of gestation and less than 37 completed weeks of gestation) was calculated by dividing the number of women who had a live spontaneous preterm birth (excluding elective caesarean section and induction of labour) by the total number of women who had a live birth after spontaneous onset of labour (excluding elective caesarean section and induction of labour). This method was repeated for the selected population of women at low risk.<\/jats:p><jats:p><jats:bold>Main outcome measure\u2002<\/jats:bold> Preterm birth rates among the overall population of women; preterm birth among all women with a spontaneous onset of labour; and preterm birth in a selected population of women who were either primiparous or multiparous, non\u2010Indigenous; aged 20\u201340 years and who gave birth to a live singleton baby after the spontaneous onset of labour.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold> Over the 10\u2010year study period, the proportion of all women having a live preterm birth in Australia increased by 12.1% (from 5.9% in 1994 to 6.6% in 2003). Among women with a spontaneous onset of labour, there was an increase of 18.3% (from 5.7 to 6.7%). Among the selected population of low\u2010risk women after the spontaneous onset of labour, the rate increased by 10.7% (from 5.6 to 6.2%) among first time mothers and by 19.2% (4.4\u20135.2%) among selected multiparous women.<\/jats:p><jats:p><jats:bold>Conclusions\u2002<\/jats:bold> Over the 10\u2010year period of 1994\u201303, the rate of spontaneous preterm birth among low\u2010risk women having a live singleton birth has risen in Australia.<\/jats:p>","DOI":"10.1111\/j.1471-0528.2007.01323.x","type":"journal-article","created":{"date-parts":[[2007,5,16]],"date-time":"2007-05-16T16:56:37Z","timestamp":1179334597000},"page":"731-735","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":69,"title":["Spontaneous preterm birth of liveborn infants in women at low risk in Australia over 10 years: a population\u2010based study"],"prefix":"10.1111","volume":"114","author":[{"given":"SK","family":"Tracy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MB","family":"Tracy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Dean","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P","family":"Laws","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E","family":"Sullivan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,5,16]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-3016.2001.00004.x"},{"key":"e_1_2_8_3_2","first-page":"322","article-title":"Poverty, education, race, and pregnancy outcome","volume":"14","author":"Savitz DA","year":"2004","journal-title":"Ethn Dis"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1503\/cmaj.051096"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1046\/j.1471-0528.2003.00011.x"},{"key":"e_1_2_8_6_2","unstructured":"BehrmanRE ButlerAS;US Committee on Understanding Premature Birth and Assuring Healthy Outcomes.Preterm birth: causes consequences and prevention.2006[http:\/\/newton.nap.edu\/catalog\/11622.html#toc]. 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