| [ Purpose ] Based on mortality data of malignant tumors and annual population data of the labor force population in Qidong City from 1972 to 2021, the crude mortality rate (CR), age-standardized mortality rate by Chinese standard population (ASMRC), and age-standardized mortality rate by world standard population (ASMRW) were calculated. The Joinpoint Regression Program (Version 4.9.1.0) was used to analyze the annual percent change (APC) and average annual percent change (AAPC) for CR, ASMRC, and ASMRW. The ARIMA model in SAS 9.2 software was employed to forecast the ASMRW trend for the next 10 years. [ Results ] From 1972 to 2021, there were 53,846 malignant tumor deaths in the labor force population of Qidong City. The AAPCs for CR, ASMRC, and ASMRW were 0.31%, -1.65%, and -1.52% (all P < 0.001), respectively. There were 36,600 deaths in males and 17,246 in females, withAAPCs of ASMRW were -1.79% and -1.07% (both P < 0.001). Mortality rates increased with age. The AAPCs for the mortality rates in the 15-24, 25-34, 35-44, 45-54, and 55-64 age groups were -1.38%, -3.00%, -1.85%, -1.29%, and -0.99% (all P < 0.001), respectively. From 1972 to 2021, the top five malignancies by ASMRW in the labor force population were liver cancer, lung cancer, Stomach cancer, female breast cancer, and colorectal cancer, constituting 78.21% of all malignant tumor deaths, with ASMRWs of 55.43/10?, 16.24/10?, 13.62/10?, 6.49/10?, and 4.59/10?, respectively. Liver cancer ranked first in all periods, with ASMRW decreasing from 80.75/10? in 1972-1976 to 18.39/10? in 2017-2021 (AAPC = -2.34%, P < 0.001). Lung cancer ASMRW increased from 11.93/10? (3rd rank) in 1972-1976 to 13.81/10? (2nd rank) in 2017-2021 (AAPC = 0.33%, P = 0.036). Stomach cancer ASMRW decreased from 26.98/10? (2nd rank) to 5.81/10? (3rd rank) (AAPC = -3.06%, P < 0.001). Female breast cancer ASMRW increased from 5.35/10? (5th rank) to 5.44/10? (4th rank) (AAPC = -0.08%, P = 0.736). Colorectal cancer ASMRW increased from 3.68/10? (6th rank) to 4.48/10? (5th rank) (AAPC = 0.03%, P = 0.877). Joinpoint analysis of ASMRW showed the most significant decline for liver cancer occurred in 2012-2021 (APC = -10.11%, P < 0.001). For lung cancer, the APC was -4.33% during 2013-2021 (P < 0.001). For Stomach cancer, the APCs were -1.82% (1972-1995), -6.58% (1995-2003), and -5.57% (2008-2021) (all P < 0.001). For female breast cancer, the APC was -1.47% during 1995-2021 (P = 0.002). For colorectal cancer, the APC was 2.23% during 1972-1995 (P < 0.001), with stable trends thereafter. The ASMRW for males, females, and the overall population is projected to decrease to 43.78/10?, 37.59/10?, and 40.55/10? by 2031, respectively. [ Conclusion ] Over the past 50 years, the standardized mortality rates of malignant tumors in the labor force population of Qidong City have decreased significantly. Future strategies should focus on strengthening comprehensive prevention and control for liver cancer, lung cancer, Stomach cancer, female breast cancer, and colorectal cancer to further reduce cancer mortality in this population and contribute more to safeguarding social productivity. |