Cancer incidence in Beijing, 2014

Objective: To analyze cancer incidence data in Beijing in 2014 and temporal trends for selected common cancers during 2005 and 2014. Methods: A total of 144 secondary and tertiary hospitals reported newly diagnosed cancer cases to Beijing Cancer Registry, which covers 13 million residents in Beijing. The cancer incidence rate was calculated in strata by cancer type, sex, age group and area. The population composition of China in 1982 and Segi's population structure were used to calculate age-standardized rates. Extensive procedures were used to assure the quality of the data. Results: The overall data quality indicators of the percentage of morphology verification (MV) (%), the percentage of death certificate-only (DCO) (%) and the mortality to incidence ratio (M/I) were 72.15%, 0.94% and 0.54 respectively. A total of 45,300 new cancer cases were diagnosed in Beijing in 2014. The incidence rate was 341.92/100,000 (343.50/100,000 in males, 340.33/100,000 in females), and the age-standardized incidence rates by Chinese standard population (ASIRC) and by world standard population (ASIRW) were 143.48/100,000 and 182.99/100,000, respectively. The cumulative incidence rate for cancer before 75 years was 20.61%. Cancers of lung, colorectum, liver, stomach and prostate were the top five common cancer types for males, while cancers of breast, lung, thyroid, colorectum and uterus were the top five common cancer types for females. The different patterns were also observed between rural and urban areas. Regarding temporal trends, the incidence of thyroid cancer has the fastest growth between 2005 and 2014. The incidence of liver cancer decreased, and stomach and esophageal cancer also decreased significantly for males in the last decade. Incidence rate for lung cancer was relatively stable during that period of time. Conclusions: With more than 45,000 new cases in Beijing in 2014, cancer remains an important public health problem. Actions should be taken to diminish total cancer incidence in Beijing.