Spatial analysis of colorectal cancer in Iran

Pakzad, R. and Moudi, A. and Pournamdar, Z. and Pakzad, I. and Mohammadian-Hafshejani, A. and Momenimovahed, Z. and Salehiniya, H. and Towhidi, F. and Makhsosi, B. R. (2016) Spatial analysis of colorectal cancer in Iran. Asian Pacific Journal of Cancer Prevention, 17. pp. 53-57.

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Colorectal cancer is one of the most common cancers. Due to demographic changes, it is predicted that the incidence of this cancer will increase. Variations of its incidence rate among geographical areas are due to various contributing factors. Since there have been a lack of studies on this topic in our country, the present assessment of spatial patterns of colorectal cancer incidence in Iran was performed. In this ecological study, the new cases of colon cancer were extracted from Cancer Registry Center report of the Health Deputy of Iran in 2009. The reported incidences of the disease were standardized on the basis of the World Health Organization population and the direct method. Then the data were inserted into the GIS software, and finally, using the analysis of hot spots (Getis-Ord Gi) high-risk areas were drawn. Provinces that are higher or lower than the national average (1.9 SD) were considered hot spots or cold spots, significant at the level of 0.05. A total of 6,210 cases of colorectal cancer were registered in Iran in 2009, of which 3,727 were in men and 2,783 in women (age-standardized rates of 11.3 and 10.9 per 100,000 population, respectively). The results showed that in central and northern Iran including Isfahan, Qom, Tehran, Qazvin and Mazandaran significant hot spots in men were present (p < 0.05). In women also we have high incidence in northern and central states: Mazandaran province (p < 0.01) and the province of Tehran (p < 0.05) had higher incidences than the national average and were apparent as significant hot spots. Analysis of the spatial distribution of colorectal cancer showed significant differences between different areas pointing to the necessity for further epidemiological studies into the etiology and early detection. © 2016, Asian Pacific Journal of Cancer Prevention.

Item Type: Article
Additional Information: Cited By :1 Export Date: 16 February 2020 Correspondence Address: Salehiniya, H.; Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical SciencesIran; email:
Uncontrolled Keywords: Colorectal cancer Geographical variation Incidence Iran age Colorectal Neoplasms female follow up human male prognosis register retrospective study risk factor spatial analysis Age Factors Follow-Up Studies Humans Registries Retrospective Studies Risk Factors
Subjects: WI Digestive System
QZ pathology-neoplasms-Genetics
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib4 lib4
Date Deposited: 01 Mar 2020 04:53
Last Modified: 01 Mar 2020 04:53

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