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Cases were singleton term stillbirths to normal weight or obese women, identified in the Stockholm stillbirth database, n = 264 and n = 87, respectively. Controls were term singletons born alive to normal weight or obese women, delivered between 2002\u20132005 and between 2018\u20132019. Placentas were compared between women with stillborn and live-born infants, using logistic regression analyses.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Results<\/jats:title>\n<jats:p>A long and hyper coiled cord, cord thrombosis and velamentous cord insertion were stronger risk factors for stillbirth in obese women compared to normal weight women. When these variables were adjusted for in the logistic regression analysis, also adjusted for potential confounders, the odds ratio for stillbirth in obese women decreased from 1.89 (CI 1.24\u20132.89) to 1.63 (CI 1.04\u20132.56).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>Approximately one fourth of the effect of obesity on the risk of stillbirth in term pregnancies is explained by umbilical cord associated pathology.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0250983","type":"journal-article","created":{"date-parts":[[2021,4,30]],"date-time":"2021-04-30T17:44:32Z","timestamp":1619804672000},"page":"e0250983","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":15,"title":["Maternal obesity and stillbirth at term; placental pathology\u2014A case control study"],"prefix":"10.1371","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7599-567X","authenticated-orcid":true,"given":"Hanna","family":"\u00c5mark","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magnus","family":"Westgren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meeli","family":"Sirotkina","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingela","family":"Hulth\u00e9n Varli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martina","family":"Persson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nikos","family":"Papadogiannakis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2021,4,30]]},"reference":[{"issue":"9774","key":"pone.0250983.ref001","doi-asserted-by":"crossref","first-page":"1331","DOI":"10.1016\/S0140-6736(10)62233-7","article-title":"Major risk factors for stillbirth in high-income countries: a systematic review and meta-analysis","volume":"377","author":"V Flenady","year":"2011","journal-title":"Lancet (London, England)"},{"issue":"9778","key":"pone.0250983.ref002","doi-asserted-by":"crossref","first-page":"1703","DOI":"10.1016\/S0140-6736(11)60064-0","article-title":"Stillbirths: the way forward in high-income countries","volume":"377","author":"V Flenady","year":"2011","journal-title":"Lancet (London, England)"},{"key":"pone.0250983.ref003","unstructured":"NBoHa. 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