Prevalence of Bladder Cancer in the Kerman Province, Southeastern Iran, using the Complete Prevalence Method

Background: Bladder cancer is the 10th most common cancer worldwide. We aimed to assess the prevalence of bladder cancer in the Kerman Province, in southeast Iran. Materials and Methods: In this cross-sectional study, we used data on 1272 patients with bladder cancer registered in the Kerman population-based cancer registry from 2014 to 2017. There were two parts of data including observed data, including those cases whose information was recorded by the cancer registry, and the unobserved part, including cases before the registry department, was established, to calculate the complete prevalence. The latter was estimated using modeling to be included in the prevalence calculation. The complete prevalence of three-, five-, ten-, and twenty-year of bladder cancer up to the end of 2017 was calculated using rprev package. Results: A total of 185 (14.54%) women and 1,087 (85.45%) men were recruited. The overall three-, five-, ten-, and twenty-year prevalence of bladder cancer at the end of 2017 was 26.54, 43.46, 80.3, and 142.36 per 100,000 inhabitants, respectively. The prevalence was estimated to be at its lowest rate among both males and females under the age of 45, and at its highest rate among those over 61 and older. In all age groups, males were affected more than females. Conclusion: The prevalence of bladder cancer in the Kerman Province was higher than the national average and increased with age. Regarding the aging population, policies and programs for prevention, early intervention, and awareness-raising in the community about this cancer are essential.