Objectives: To determine the incidence of bladder cancer (BC) in the autonomous communities that include the largest number of cases in the national hospital BC registry (Andalusia, Catalonia and Madrid) and report the clinical, pathological and diagnostic differences and similarities of BC in these regions.
Material And Methods: An observational epidemiological study was performed in 2011 in 12 public hospitals with reference population areas according to the National Health System (Spain). Demographic and clinical variables were collected from new cases and relapses, with histopathologic confirmation of BC. The raw incidence rate was calculated using the number of diagnosed cases in all the participating centers compared with the aggregate total population assigned to each center. The raw rates by age and sex were obtained from the National Institute of Statistics (2011) by weighting the assigned population with the distribution by age and sex.
Results: The 3 autonomous communities recorded 51% of the 4285 cases included in the national registration, with relapses corresponding to 42.8% of these cases. The raw annual incidence rate for new episodes was 22.6 (95% CI: 20.7; 24.6) in Andalusia, 23.5 (95% CI: 20.9; 26.0) in Catalonia and 22.0 (95% CI: 19.9; 24.1) in Madrid.
Conclusions: Except for the larger proportion of smokers and lower tumor grade of lesions in Andalusia, the 3 autonomous communities studied are similar in terms of clinical characteristics, comorbidities, patient symptoms and diagnostic processes for BC.
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