[Abstract] Purpose To analyse the incidence rate of Gallbladder cancer cases in the whole population of Qidong from 1972 to 2021 to provide a basis for prognostic evaluation and prevention. Methods The incidence data of Gallbladder and Biliary Tract cancer from 1972-2021 from the Qidong City Tumour Registry database were used to calculate statistical indicators such as crude rate (CR), age-standardized rate by Chinese standard population (ASRC), age-standardized rate by world standard population (ASRW), and so on. Trend analysis was performed using Joinpoint 4.9.1.0 software to calculate the annual percentage change (APC) of Gallbladder cancer incidence rates, and time trend analysis was performed on the overall incidence rate of Gallbladder cancer, the incidence rate by gender and age, to determine whether there was a statistically significant difference in the long-term trend of the rate. Results 1,369 cases of gallbladder cancer occurred in Qidong City from 1972-2021, accounting for 0.93%of the onset of all malignant tumors; the total CR of gallbladder cancer was 244/100,000 in 50 years, total ASRC was 088/100,000, and total ASRW was 145/100,000. The incidence of 35-64 years of age is 1.98/100,000, the cumulative incidence of gallbladder cancer at 0-74 years old is 0.16%, and the risk of cumulative incidence of gallbladder cancer is 0.16%. The incidence of men is significantly higher than that of women. The gender ratio of CR, ASRC and ASRW is 0.89, 1.07, and 1.06 in order. With the increase of age in each age group, the incidence of gallbladder cancer has also increased. The age of gallbladder cancer is slightly improved. The overall gallbladder cancer, men and women, and the incidence of each age group have a significant upward trend in 50 years. Conclusion The incidence of Gallbladder and Biliary Tract cancer in the whole population of Qidong City has increased considerably during the past 50 years, with the incidence rate of the higher age group higher than that of the lower age group, and continued attention should be paid to the research of Gallbladder and Biliary Tract cancer prevention and treatment especially for the key populations. |