{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T17:53:43Z","timestamp":1780682023839,"version":"3.54.1"},"reference-count":25,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2019,12,30]],"date-time":"2019-12-30T00:00:00Z","timestamp":1577664000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["N01\u2010ES\u201075558"],"award-info":[{"award-number":["N01\u2010ES\u201075558"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000065","name":"National Institute of Neurological Disorders and Stroke","doi-asserted-by":"publisher","award":["UO1 NS 047537\u201001"],"award-info":[{"award-number":["UO1 NS 047537\u201001"]}],"id":[{"id":"10.13039\/100000065","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000065","name":"National Institute of Neurological Disorders and Stroke","doi-asserted-by":"publisher","award":["UO1 NS 047537\u201006A1"],"award-info":[{"award-number":["UO1 NS 047537\u201006A1"]}],"id":[{"id":"10.13039\/100000065","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BJOG"],"published-print":{"date-parts":[[2020,3]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To study if childhood emotional, physical and sexual abuse are determinants for having an unplanned pregnancy, if the categories of abuse interact, and if a potential bias due to the selection of the participants (collider stratification bias) could explain the effect of childhood abuse.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>A cross\u2010sectional study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>The study is based on the Norwegian Mother and Child Cohort Study (MoBa) and uses data from the Medical Birth Registry of Norway.<\/jats:p><\/jats:sec><jats:sec><jats:title>Sample<\/jats:title><jats:p>Women participating in the MoBa for the first time, \u226518\u00a0years of age who responded to questions regarding childhood abuse and pregnancy planning (<jats:italic>n\u00a0<\/jats:italic>=<jats:italic>\u00a0<\/jats:italic>76\u00a0197).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data were collected using questionnaires. We conducted analyses using modified Poisson regressions and the relative excess risks due to interaction (RERI). Sensitivity analyses were performed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measure<\/jats:title><jats:p>An unplanned pregnancy (yes\/no).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Exposure to childhood emotional (adjusted relative risk [RR] 1.14, 95% CI 1.10\u20131.19), physical (adjusted RR 1.11, 95% CI 1.04\u20131.18) and sexual (adjusted RR 1.20, 95% CI 1.14\u20131.27) abuse increased the risk of having an unplanned pregnancy. The effects could not be explained by the collider stratification bias. The different combinations of categories of abuse did not show any interaction effects.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Childhood emotional, physical and sexual abuses separately increase the risk of having an unplanned pregnancy. The results indicate that victims of childhood abuse are in greater need of support to achieve their reproductive goals.<\/jats:p><\/jats:sec><jats:sec><jats:title>Tweetable abstract<\/jats:title><jats:p>Childhood abuse increases the risk of having an unplanned pregnancy. #reproductivehealth #epitwitter.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1471-0528.16037","type":"journal-article","created":{"date-parts":[[2019,12,5]],"date-time":"2019-12-05T07:07:55Z","timestamp":1575529675000},"page":"438-446","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Childhood abuse and unplanned pregnancies: a cross\u2010sectional study of women in the Norwegian Mother and Child Cohort Study"],"prefix":"10.1111","volume":"127","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4806-5471","authenticated-orcid":false,"given":"J","family":"Drevin","sequence":"first","affiliation":[{"name":"Department of Public Health and Caring Sciences 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