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. 2021 May 19;11(5):e046055. doi: 10.1136/bmjopen-2020-046055

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Cancer detection rates stratified by T stages based on age and FIT positivity groups. T stage was classified according to the Union for International Cancer Control (UICC) tumour, node, metastasis (TNM) Classification. FIT (+/+) had a higher percentage of invasive cancers than in FIT (+/−). FIT, faecal immunochemical test. FIT (+/+) indicates two-positive results for the two-sample FIT. FIT (+/−) indicates a one-positive result for the two-sample FIT.