Analysis on mortality and trend of breast cancer in women in Beijing, 2010–2020

  Objective   To analyze the mortality and trend of breast cancer in women with registered permanent residence in Beijing from 2010 to 2020, and provide scientific evidence for the prevention and control of breast cancer.

  Methods   Based on the surveillance data of breast cancer deaths in women in Beijing from 2010 to 2020, the mortality rate, standardized mortality rate and years of premature death per 100 000 people (years of life lost, YLL rate) and other indicators were calculated, and the change in interval between onset and death of the patients and the proportion of the patients with secondary metastasis from 2010 to 2020 were analyzed. Software Joinpoint was used to analyze the trend of changes in the mortality rate and age-specific rate of breast cancer in the women in Beijing from 2010 to 2020.

  Results   From 2010 to 2020, a total of 9 108 deaths of breast cancer occurred in the women with registered permanent residence in Beijing, and the crude death rate in 2020 was 14.43/100 000, an increase of 33.12% (average annual percent change, AAPC=3.10%, P<0.001) compared with 2010 (10.84/100 000), the age standardized mortality rate slowed a slighter increase (AAPC=1.10%, P=0.012). From 2010 to 2020, the median of age and the survival time from onset to death of the women who died of breast cancer in Beijing all showed an upward trends.

  Conclusion   From 2010 to 2020, breast cancer was still the main cause of deaths from malignant tumors in women in Beijing, ranking fifth in malignant tumors. In recent years, the morbidity and mortality of breast cancer increased with year, but the survival time of women with breast cancer showed some increase, indicating that the prevention and treatment of breast cancer was effective in Beijing.