Immortal time bias in a retrospective study examining colorectal cancer mortality according to adherence to colonoscopy | Gut

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Letter

Immortal time bias in a retrospective study examining colorectal cancer mortality according to adherence to colonoscopy

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Cite this article as:: Winters C, Ford AC

Immortal time bias in a retrospective study examining colorectal cancer mortality according to adherence to colonoscopy

Gut 2023;72:1799-1800.