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. 2014 Dec 12;44(4):1408–1421. doi: 10.1093/ije/dyu192

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© The Author 2014. Published by Oxford University Press on behalf of the International Epidemiological Association

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 7. — Effect of discontinuing treatment. A control group with hazard rate $2 α (t)$ is compared with a treatment group with hazard rate $α (t)$ . Treatment is discontinued at time point 1.