[Epidemiology investigation of colorectal cancer on community group in Guangdong province].

Objective: To explore the epidemiology characteristics of colorectal cancer on community group in Guangdong province.

Methods: Huidong was took as the research spot to investigate the sickness and incidence of colorectal cancer among a whole community group in Guangdong province, and two projects were used simultaneously: "screening of colorectal cancer in high risk group" and "screening project using fecal occult blood test". The numeration time for population of 10 towns was set at July 1, 2005. Five towns were sampled out from Huidong with 100,859 persons. Meanwhile, the diseases and death cause registering system was established.

Results: The incidence of colorectal cancer in Huidong community group was 15.2/100,000 (male 17.2/100,000, female 13.0/100,000), the age-adjusted incidence was 17.6/100,000 (male 19.5/100,000, female 16.7/100,000). The morbidity was 41.9/100,000 (male 46.5/100,000, female 37.2/100,000), the age-adjusted morbidity was 49.0/100,000 (male 54.1/100,000, female 45.6/100,000). The mortality was 5.0/100,000 (male 5.9/100,000, female 4.0/100,000) and the age-adjusted morbidity was 6.4/100,000 (male 7.2/100,000, female 5.7/100,000).

Conclusion: The incidence of colorectal cancer in Huidong community group is lower than that of high incidence area in China, but gets close to the normal incidence area of China and general level of the world.