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. 2022 Jan 17;12(1):e052376. doi: 10.1136/bmjopen-2021-052376

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© Author(s) (or their employer(s)) 2022. 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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Overall and sex-specific annualised age-standardised incidence rates (ASIR) of colorectal cancer in Africa. Event values represent the ASIR of colorectal cancer per 100 000 population. Blue squares and their corresponding lines are the point estimates and 95% CIs. Maroon diamonds represent the pooled estimate of the ASIR, overall and by sex (width denotes 95% CI). Although not statistically significant, the pooled ASIR of colorectal cancer in Africa was higher in males (I²=39) than in females (I²=37). P for interaction comparing the different subgroups=0.37.