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. 2012 Jan 30;344:e299. doi: 10.1136/bmj.e299

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© Weedon-Fekjær et al 2012

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode.

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graphic file with name weeh860569.f1_default.jpg — Fig 1 (Top) Incidence of invasive breast cancer among Norwegian women, 1987-2008. Curves smoothed with Friedman’s super smoother as implemented in statistical program R.²⁶ Points and curves are all age standardised relative to year 2000. (Middle) Overview of Norwegian screening programme’s gradual introduction (calculated as approximated proportion of woman in target group invited). (Bottom) Sales of hormone treatment in Norway, 1987-2008