Analysis of incidence tends of malignant tumor in Ganzhou district of Zhangye city from 2015 to 2019
Objective To analyzed the incidence situation of malignant tumors in Ganzhou district of Zhangye city,Gansu province from 2015 to 2019,and provide scientific reference for formulating tumor prevention and control measures by local governments.Methods The data of malignant tumors cases in Ganzhou district from 2015 to 2019 was obtained from the System of China Tumor Registration Platform,and the crude incidence rate,Chinese standardized incidence rate,world standardized incidence rate,cumulative rate,truncated age incidence rate and annual percentage change(APC)were calculated for analyzing the changing trend of malignant tumors.Results The crude incidence of malignant tumors was 280.95/100 000 in Ganzhou district from 2015 to 2019,with the incidence rate of 326.97/100 000 in the male and 233.06/100000 in the female.The Chinese standardized incidence was 229.67/1000 000,with that of 266.40/100 000 in the male and 192.40/100 000 in the female.The APC of Chinese standardized incidence of malignant tumors in 5 years was-5.94%,without the changing trend(P=0.126).The APC of truncated rate of 35-64 years old was-7.85%,and showed decreasing trend(P=0.035).The APC of truncation rate of 35-64 years old was-11.92%in the male,and showed decreasing trend(P=0.018),The APC of cumulative rate of 0-74 years old was-11.94%,and showed decreasing trend(P=0.036).The Chinese standardized incidence rate was lower in the 0-44 years old population(lower than 110/100 000 in all age groups),and quickly increased in the age group of 45 years and reached the peak in the age group of 75 years.The top five malignant tumors in the male was gastric cancer,tracheobronchial lung cancer,liver cancer,esophageal cancer and rectal cancer,respectively.The top five of malignant tumors in female was breast cancer,gastric cancer,tracheobronchial lung cancer,cervical cancer and esophageal cancer,respectively.The APC of Chinese standardized incidence of gastric cancer and esophageal cancer was-7.35%and-17.20%,respectively,with statistical differences(P<0.05)the the change trend.Conclusions Malignant tumors shows high incidence in Ganzhou district from 2015 to 2019,and the gastric cancer is the first order which is the key for prevention and treatment in the future.The trend of younger age is found.The surveillance of malignant tumor with lower trend of younger age should be continuously strengthened.