Link to publicationCitation for published version (APA): Lagerlund, M., Sontrop, J. M., & Zackrisson, S. (2013). Do reproductive and hormonal risk factors for breast cancer associate with attendance at mammography screening? Cancer Causes and Control, 24(9), 1687 -1694 . DOI: 10.1007 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Results In this study cohort, mammography screening attendance ranged from 87.6 to 94.5 % between calendar years, with an average attendance of 92 %. Higher attendance was found among women who had given birth to fewer than three children (ORs ranging between 1.15 and 1.37) and had used oral contraceptives (OC) within the last decade (OR = 1.22, 95 % CI 1.07-1.38) and for a longer period (OR = 1.13, 95 % CI 1.01-1.27). A lower odds of attendance was found among post-menopausal women (OR = 0.86, 95 % CI 0.77-0.96). Age \13 at menarche, age C30 at first childbirth, age C55 at menopause, age\20 at first OC use, nulliparity, breastfeeding, and hormone replacement therapy were not associated with mammography attendance.
ConclusionReproductive and hormonal risk factors for breast cancer have little effect on mammography screening attendance. This may indicate a potential for underscreening of some women at higher risk.2