ABSTRACT
Objective @#To analyze the trends in mortality and life lost due to bladder cancer in Suzhou City, Jiangsu Province from 2003 to 2022, so as to provide the reference for prevention and treatment strategy of bladder cancer.@*Methods@# The data of bladder cancer death in Suzhou City from 2003 to 2022 were collected through Suzhou Residents' Death Registration System, including age, gender, date of death and underlying cause of death. The crude mortality, standardized mortality, years of potential life lost (PYLL), standardized years of potential life lost (SPYLL), years of potential life lost rate (PYLLR), standardized years of potential life lost rate (SPYLLR) and average years of life lost (AYLL) were calculated. The average annual percent change (AAPC) was used to analyze the trends in bladder cancer death and life lost. @*Results@#Totally 2 978 deaths occurred due to bladder cancer in Suzhou City from 2003 to 2022. The crude mortality was 2.22/105, which appeared a tendency towards a rise (AAPC=4.271%, P<0.05). The standardized mortality was 0.91/105, which appeared no significant changing trend (P>0.05). The standardized mortality was 1.58/105 in males and 0.37/105 in females, which appeared no significant tendency in males (P>0.05) and appeared a tendency towards a decline in females (AAPC=-2.331%, P<0.05). The age-specific crude mortality was low among people who aged under 45 years, began to rise among people aged over 45 years and peaked among people aged 60 years and older. The crude mortality of bladder cancer in males aged 60 years and older showed an increasing trend (AAPC=2.864%, P<0.05), but there was no significant tendency in females aged 60 years and older (P>0.05). The PYLL, SPYLL, PYLLR, SPYLLR and AYLL of bladder cancer were 5 020.00 person-years, 2 945.14 person-years, 0.04‰, 0.03‰ and 9.07 years per person. SPYLL, SPYLLR and AYLL showed an decreasing trend (AAPC=-2.867%, -3.321%, -3.738%, P<0.05). @*Conclusions@#The mortality of bladder cancer in Suzhou City appeared a tendency towards a rise from 2003 to 2022. The PYLL appeared a downward trend. Males aged 60 years and older are the key groups for the prevention and control of bladder cancer.
ABSTRACT
Objective@#To investigate the trends in mortality and life lost due to female breast cancer among in Suzhou City from 2007 to 2021, so as to provide insights into improvements of breast cancer control strategy in Suzhou City.@*Methods@#The epidemiological and clinical data pertaining to dead female breast cancer cases in Suzhou City from 2007 to 2021 were collected from Suzhou Municipal Chronic Disease Surveillance System, including gender, age and cause of death. The crude mortality, standardized mortality, years of potential life lost (YPLL), years of potential life lost rate (YPLLR), standardized YPLL (SYPLL), standardized YPLLR (SYPLLR) and average years of life lost (AYLL) due to female breast cancer were calculated. All data were standardized by the Fifth National Population Census in 2000, and the trends in mortality of breast cancer were estimated using average annual percent change (AAPC). @*Results@#Totally 4 425 death occurred due to female breast cancer in Suzhou City from 2007 to 2021, with a crude mortality rate of 8.67/105, which appeared a tendency towards a rise (AAPC=1.83%, t=5.080, P=0.001), and the standardized mortality was 4.68/105, which appeared no significant changes (AAPC=0.13%, t=0.356, P=0.727). The crude mortality rates of female breast cancer were 0.62/105, 10.33/105 and 21.69/105 among women at ages of 15 to 34, 35 to 64 years and 65 years and older, respectively, which appeared a tendency towards a rise (χ2trend=2 315.683, P=0.001). The crude mortality of female breast cancer was 8.66/105 in urban areas and 8.86/105 in rural areas, both appearing a tendency towards a rise (urban areas: AAPC=1.73%, t=3.290, P=0.006; rural areas: AAPC=2.68%, t=6.565, P=0.001). The YPLL, SYPLL, YPLLR, SYPLLR and AYLL of female breast cancer were 44 485 person-years, 30 387 person-years, 0.99‰, 0.68‰ and 14.94 years per person, and both YPLLR (AAPC=-1.06%, t=-2.193, P=0.047) and AYLL (AAPC=-1.53%, t=-4.783, P=0.001) appeared a tendency towards a reduction, respectively. @*Conclusion@#The crude mortality of female breast cancer appeared a tendency towards a rise and the life loss appeared a tendency towards a decline in Suzhou City from 2007 to 2021. The elderly population should be given a high priority for breast cancer control.