{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,26]],"date-time":"2023-10-26T15:05:51Z","timestamp":1698332751268},"reference-count":55,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2004,3,1]],"date-time":"2004-03-01T00:00:00Z","timestamp":1078099200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[2004,6,20]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Studies suggesting a positive association between pregnancy termination and breast cancer risk have often been of retrospective case\u2010control design, so subject to selection and recall biases. We undertook a registry\u2010based analysis with minimal selection bias and prospective record\u2010based ascertainment of terminations. The source population comprised Massachusetts women with a record of giving birth between 1987 and 1999 in the Massachusetts Vital Statistics Registry. Primary breast cancer cases were 25\u201355 years old at diagnosis between 1988 and 2000 and had a record of the diagnosis in the Massachusetts Cancer Registry. We matched 3 controls to each case on maternal age, year of giving birth and birth facility. Information on terminations (induced and spontaneous) before the birth of record, the matched factors and potential confounders were collected from the birth certificate. After adjustment for the matched factors, age, parity and maternal and paternal education, the odds ratio associating any termination history with breast cancer risk equaled 0.91 (95% CI = 0.79\u20131.05). The marginally protective adjusted odds ratio largely derived from a protective effect among women with parity equaled to 1 (OR for any termination = 0.68; 95% CI = 0.45\u20131.03), suggesting a protective effect of terminated pregnancy among women with one live birth. \u00a9 2004 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ijc.20136","type":"journal-article","created":{"date-parts":[[2004,4,2]],"date-time":"2004-04-02T16:01:47Z","timestamp":1080921707000},"page":"443-448","source":"Crossref","is-referenced-by-count":8,"title":["Null association between pregnancy termination and breast cancer in a registry\u2010based study of parous women"],"prefix":"10.1002","volume":"110","author":[{"given":"Timothy L.","family":"Lash","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aliza 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