Abstract
The National Central Cancer Registry of China (NCCR) affiliated to the Bureau of Disease Control, National Health and Family Planning Commission of China is responsible for cancer surveillance in the entire country. Cancer registration data from each local registry located in each province are collected by NCCR annually to be analyzed and published to provide useful information for policy makers and cancer researchers. Until 1st June, 2013, 219 population-based cancer registries submitted data of 2010 to the National Central Cancer Registry of China covering about 207,229,403 population, and 145 cancer registries were selected after quality evaluation for this study. Colorectal cancer cases were selected from the database according to ICD-10 coded as "C18-C20". We calculated the crude incidence and mortality rates by sex, age groups and location (urban/rural). The China population in 2000 and Segi's population were used as standardized populations for the calculation of age-standardized rates. The 6th National Population Census data of China was used to combined with the cancer registries' data to estimate the colorectal cancer burden in China in 2010. Colorectal cancer was the sixth most common cancer in China. It was estimated that there were 274,841 new cases diagnosed in 2010 (157,355 in males and 117,486 in females), with the crude incidence rate of 20.1/100,000, highest in males in urban areas. Age-standardized rates by China standard population of 2000 (ASRcn) and World standard population (Segi's population, ASRwld) for incidence were 16.1/100,000 and 15.9/100,000 respectively. There were 132,110 cases estimated to have died from colorectal cancer in China in 2010 (76,646 men and 55,464 women) with the crude mortality rate of 10.1/100,000. The ASRcn and ASRwld for mortality were 7.55/100,000 and 7.44/100,000 respectively, higher in males and urban areas than in females and rural areas. The incidence and mortality rates increased with age, reaching peaksin the 80-84 year old, and oldest age groups, respectively. Colorectal cancer is one of the most common incident cancers and cause of cancer death in China. Primary and secondary prevention, with attention to a health lifestyle, physical activity and screening should be enhanced in the general population.
Highlights
Colorectal cancer incidence and mortality in China was reported during the past several years
In 2013, 219 cancer registries submitted data of 2010 to the National Central Cancer Registry, and 145 cancer registries have been selected as sources of this study after quality evaluation, and the cancer incidence and mortality for the registration areas covered in 2010 was calculated
Pooled data There were 145 population-based cancer registries selected in this study after evaluation process for each submitted data, covered about 158,403,248 populations, including 80,355,188 males and 78,048,060 females, accounting for 11.88% of the whole national population. 63 registries among them from urban areas covered about 92,433,739 (58.35%) populations, and 82 registries from rural areas with covered about 65,969,509 (41.65%)
Summary
Colorectal cancer incidence and mortality in China was reported during the past several years. In 2013, 219 cancer registries submitted data of 2010 to the National Central Cancer Registry, and 145 cancer registries have been selected as sources of this study after quality evaluation, and the cancer incidence and mortality for the registration areas covered in 2010 was calculated. The data from this survey can help us understand the incidence, distribution and mortality of colorectal cancer, the patients can really benefit from the future policy. We calculated the crude incidence and mortality rates by sex, age groups and location (urban/rural). With attention to a health lifestyle, physical activity and screening should be enhanced in the general population
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