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

Affiliations

¹ Veneto Tumour Registry, Azienda Zero, Padova, Italy manuel.zorzi@azero.veneto.it.
² Azienda ULSS n 2 Marca Trevigiana, Treviso, Italy.
³ Veneto Tumour Registry, Azienda Zero, Padova, Italy.

Comment

Manuel Zorzi et al. Gut. 2023 Nov.

. 2023 Nov;72(11):2190-2192.

doi: 10.1136/gutjnl-2022-328905. Epub 2022 Nov 4.

¹ Veneto Tumour Registry, Azienda Zero, Padova, Italy manuel.zorzi@azero.veneto.it.
² Azienda ULSS n 2 Marca Trevigiana, Treviso, Italy.
³ Veneto Tumour Registry, Azienda Zero, Padova, Italy.

No abstract available

Keywords: cancer; colorectal cancer; colorectal cancer screening.

Conflict of interest statement

Competing interests: None declared.

Non-compliance with colonoscopy after a positive faecal immunochemical test doubles the risk of dying from colorectal cancer.
Zorzi M, Battagello J, Selby K, Capodaglio G, Baracco S, Rizzato S, Chinellato E, Guzzinati S, Rugge M. Zorzi M, et al. Gut. 2022 Mar;71(3):561-567. doi: 10.1136/gutjnl-2020-322192. Epub 2021 Mar 31. Gut. 2022. PMID: 33789965 Free PMC article.
Immortal time bias in a retrospective study examining colorectal cancer mortality according to adherence to colonoscopy.
Winters C, Ford AC. Winters C, et al. Gut. 2023 Sep;72(9):1799-1800. doi: 10.1136/gutjnl-2022-328419. Epub 2022 Sep 5. Gut. 2023. PMID: 37549982 No abstract available.