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Comparison was made with a selected group of 282 non\u2010risk pregnant women. A significant association was found between threatened abortion and the overall number of complications in the second half of pregnancy requiring medical intervention and\/or admission to hospital, impending pre\u2010term birth requiring betamimetics, pre\u2010term birth, retention of the placenta, birth weight below 2000 g, light\u2010for\u2010dates infants in case of pre\u2010term birth or birth weight below 2000 g, and hyperbilirubinemia in infants with birth weight below 2000 g. The incidences of perinatal mortality and congenital malformations did not differ significantly from those of the control group. Pregnancies complicated by threatened abortion constitute a risk group requiring careful obstetric and perinatal supervision and follow\u2010up.<\/jats:p>","DOI":"10.3109\/00016348509154709","type":"journal-article","created":{"date-parts":[[2009,12,8]],"date-time":"2009-12-08T17:57:36Z","timestamp":1260295056000},"page":"151-156","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["THE OUTCOME OF PREGNANCY AFTER THREATENED ABORTION"],"prefix":"10.1111","volume":"64","author":[{"given":"Jens B.","family":"Hertz","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lars","family":"Heisterberg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,1,11]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"937","article-title":"Fetal growth. 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