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. 2019 Jan;7(1):44–51. doi: 10.1016/S2213-8587(18)30306-1

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© 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Kaplan-Meier curves showing risk of recurrence during follow-up

(A) Kaplan-Meier curve of risk of recurrence according to radioactive iodine dose (3·7 GBq or 1·1 GBq). (B) Kaplan-Meier curve of risk of recurrence according to preparation for ablation with recombinant human thyroid-stimulating hormone (rhTSH) or thyroid hormone withdrawal. Kaplan-Meier curves appear to separate after about 7 years but there are only two events in total from this point. At 7 years, recurrence rates were 5·0% (95% CI 2·5–10·0) with thyroid hormone withdrawal and 8·3% (95% CI 4·5–15·3) with rhTSH, with overlapping confidence intervals.