RESUMO
Objective To analyze the characteristics and trend of incidence and mortality of thyroid cancer in Zhejiang Province from 2007 to 2011.Methods Data from cancer registry and death registry in Zhejiang province were used to calculate the crude incidence and mortality,age -specific incidence and mortality,China - and World -standardized incidence and mortality of thyroid cancer.Trend Chi -square test was used to analyze the trend of incidence and mortality. Results From 2007 to 2011,the reported incidence rate of thyroid cancer in Zhejiang Province was 8.37 /100,000 (China -and World -standardized incidence were 5.28 /100,000 and 6.14 /100,000 respectively).The mortality rate was 0.34 /100,000 (China -and World -standardized mortality were 0.17 /100,000 and 0.24 /100,000 respectively). The incidence and mortality were both significantly higher in females and urban residents than in males and rural residents (both P <0.01).With age increased,the mortality increased.However,the incidence increased at the beginning and then declined with a peak age of 30 -59.From 2007 to 2011,the incidence of thyroid cancer increased rapidly with a speed of 29.95% per year while the mortality did not show the similar trend.Conclusion The incidence of thyroid cancer in Zhejiang Province is growing rapidly and the relative risk factors should be taken into consideration in future researches.
RESUMO
Objective To analyze the survival rate of colorectal cancer,using data from the population-based cancer registry during 2005-2010 in Zhejiang.Methods The last follow-up activites on 17 235 cases regarding the survival status was December 31,2012.Both cumulative observed survival rate (OS) and relative survival rate (RS) were calculated with SURV 3.01 software drawn up by Hakulinen.Results The OS on 1,3 and 5 year were 76.71％,58.14％,50.58％ and the RS on 1,3 and 5 year were 78.93％,63.48％,58.73％,respectively.The 1,3 and 5 year relative survival rates on males vs.females were 79.36％ vs.78.35％,63.63％ vs.63.29％,and 58.85％ vs.58.57％,respectively and the difference between them was not statistically significant (x2=1.08,P=0.298).The 5 year OS and RS of the urban population were 55.06％ and 64.09％ and the 5 year OS and RS of the rural population were 47.59％ and 55.16％,with statistically significant differences (x2 =85.84,P＜0.001).The 55-64 age group appeared higher relative survival rate.There were significant differences in the survival rates among different age groups (x2=333.42,P＜0.001).The 5 year RS of colon vs.rectum were 61.47％ vs.56.45％.Colon patients showed better relative survival rate (x2=7.26,P＜0.05).Conclusion The wide variations in colorectal cancer survival rates were seen between the urban and rural populations.Public health resources should be focused on rural areas.Patients younger than 55 years should be under specific attention to further understand the related factors which influencing the prognosis of the diseases.