Abstract
The Zhejiang Provincial Cancer Prevention and Control Office collected cancer registration data during 2000 to 2009 from 6 cancer registries in Zhejiang province of China in order to analyze the cancer incidence. Descriptive analysis included cancer incidence stratified by sex, age and cancer site group. The proportions and cumulative rates of 10 common cancers in different groups were also calculated. Chinese population census in 1982 and Segi's population were used for calculating age-standardized incidence rates. The log-linear model was used for fitting to calculate the incidence trends. The 6 cancer registries in Zhejiang province in China covered a total of 60,087,888 person-years during 2000 to 2009 (males 30,445,904, females 29,641,984). The total number of new cancer cases were 163,104 (males 92,982, females 70,122). The morphology verified cases accounted for 69.7%, and the new cases verified only by information from death certification accounted for 1.23%. The crude incidence rate in Zhejiang cancer registration areas was 271.5/105 during 2000 to 2009 (male 305.41/105, female 236.58/105), age-standardized incidence rates by Chinese standard population (ASIRC) and by world standard population (ASIRW) were 147.1/105 and 188.2/105, the cumulative incidence rate (aged from 0 to 74) being 21.7%. The crude incidence rate was 209.6/105 in 2000, and it increased to 320.20/105 in 2009 (52.8%), with an annual percent change (APC) of 4.51% (95% confidence interval, 3.25%-5.79%). Age-specific incidence rate of 80-84 age group was achieved at the highest point of the incidence curve. Overall with different age groups, the cancer incidences differed, the incidence of liver cancer being highest in 15-44 age group in males; the incidence of breast cancer was the highest in 15-64 age group in females; the incidences of lung cancer were the highest in both males and females over the age of 65 years. Lung cancer, digestive system malignancies and breast cancer are the most common cancers in Zhejiang province in China requiring an especial focus. The incidences of thyroid cancer, prostate cancer, cervical cancer and lymphoma have increased rapidly. Prevention and control measures should be implemented for these cancers.
Highlights
Population-based cancer registry collects the data on cancer incidence and mortality deaths from covered population to describe and survey the epidemics in certain areas (Parkin, 2006)
The crude incidence rate was 209.6/105 in 2000, and it increased to 320.20/105 in 2009 (52.8%), with an annual percent change (APC) of 4.51% (95% confidence interval, 3.25%-5.79%)
Age-specific incidence rate From 2000 to 2009 in Zhejiang registration areas, the cancer incidence rate of all cancer was relatively low before 34 years old
Summary
Population-based cancer registry collects the data on cancer incidence and mortality deaths from covered population to describe and survey the epidemics in certain areas (Parkin, 2006). According to the data published by WHO International Agency for Research on Cancer (IACR) (GLOBOCAN 2012), there were 14, 100, 000 new incidence cases, and 8, 200, 000 new death cases in 2012 in the world. There were 3, 060, 000 new incidence cases and 2, 200, 000 new death cases in China (Ferlay et al, 2012). National Central Cancer Registry (NCCR) of China reported the incidence rate was 184.81/105 in. We checked, sorted and analyzed the incidence data in Zhejiang cancer registry from 2000 to 2009, in order to utilize the data in scientific researches, clinical trials and making decision of cancer prevention and control strategies
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