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dc.contributor.authorWeedon-Fekjær, Harald
dc.contributor.authorBakken, Kjersti
dc.contributor.authorVatten, Lars Johan
dc.contributor.authorTretli, Steinar
dc.date.accessioned2022-05-18T10:29:03Z
dc.date.available2022-05-18T10:29:03Z
dc.date.issued2012-01-30
dc.description.abstractObjective To quantify the separate contributions of menopausal hormone treatment and mammography screening activities on trends in incidence of invasive breast cancer between 1987 and 2008.<p> <p>Design Population study using aggregated data analysed by an extended age-period-cohort model. <p>Setting Norway. <p>Population Norwegian women aged 30-90 between 1987 and 2008, including 50 102 newly diagnosed cases of invasive breast cancer. <p>Main outcomes measures Attributable proportions of mammography screening and hormone treatment to recent incidence of invasive breast cancer, and the remaining variation in incidence after adjustment for mammography screening and hormone treatment. <p>Results The incidence of invasive breast cancer in Norway increased steadily until 2002, levelled off, and then declined from 2006. All non-linear changes in incidence were explained by use of hormone treatment and mammography screening activities, with about similar contributions of each factor. In 2002, when the incidence among women aged 50-69 was highest, an estimated 23% of the cases in that age group could be attributed to mammography screening and 27% to use of hormone treatment. <p>Conclusions Changes in incidence trends of invasive breast cancer since the early 1990s may be fully attributed to mammography screening and hormone treatment, with about similar contributions of each factor.en_US
dc.identifier.citationWeedon-Fekjær H, Bakken K, Vatten LJ, Tretli S. Understanding recent trends in incidence of invasive breast cancer in Norway: age-period-cohort analysis based on registry data on mammography screening and hormone treatment use. BMJ. British Medical Journal. 2012;344en_US
dc.identifier.cristinIDFRIDAID 908797
dc.identifier.doi10.1136/bmj.e299
dc.identifier.issn0959-8146
dc.identifier.urihttps://hdl.handle.net/10037/25167
dc.language.isoengen_US
dc.publisherBMJen_US
dc.relation.journalBMJ. British Medical Journal
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2012 The Author(s)en_US
dc.subjectVDP::Medisinske fag: 700::Helsefag: 800::Epidemiologi medisinsk og odontologisk statistikk: 803en_US
dc.subjectVDP::Midical sciences: 700::Health sciences: 800::Epidemiology, medical and dental statistics: 803en_US
dc.titleUnderstanding recent trends in incidence of invasive breast cancer in Norway: age-period-cohort analysis based on registry data on mammography screening and hormone treatment useen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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