Long-term trends in bladder cancer incidence using a harmonized staging variable - A SEER-based study.

ABSTRACT:

Background

Coding changes in disease definitions have influenced trends in bladder cancer epidemiologic outcomes in registries. The Surveillance, Epidemiology, and End Results (SEER) Program introduced a harmonized staging variable (available by request to the SEER Program) for long-term trend analysis. This study analyzes trends in bladder cancer incidence using the harmonized staging variable.

Methods

Using SEER 12 registry data, we compared trends in the incidence of bladder cancer cases diagnosed during 1992-2019 using the revised (or harmonized) staging variable against the original staging variables (SEER modified AJCC 3rd edition for 1992-2003, Derived AJCC 6th edition for 2004-15, Derived SEER Combined for 2016-17, Derived EOD 2018 for 2018-2019). We used JoinPoint r

SUBMITTER: Kumar P 

PROVIDER: S-EPMC12333449 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature