International Journal of Preventive Medicine (Int J Prev Med)2008-78021262021101324772477ENDepartment of Biostatistics, School of Health, Isfahan University of Medical Sciences, IsfahanDepartment of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan & Department of Biostatistics, School of Public Health, Kermanshah University of Medical Sciences, KermanshahHealth Education and Health Promotion, Health Promotion Department, Health School, ShirazSocial Department of Health Research Center, Isfahan University of Medical Sciences, Isfahan20211013<p><strong>Background</strong>: Breast, uterine, and ovarian cancers are the most prevalent types of cancers among women. The aim of this study was to estimate the relative risk of these cancers and recognizing spatial patterns of their shared and specific risk factors in cities of Isfahan province, one of the most populated provinces of Iran, using spatial shared component model.</p><p><strong>Methods</strong>: In this ecological study, the population consisted of all the registered patients having breast, ovarian, and uterine cancers in the cities of Isfahan from 2005 to 2010. In order to simultaneously analyze these diseases and clarify common and specific patterns of disease, spatial Shared component model was applied. Model fitting was done using Bayesian inference in OpenBUGS software.</p><p><strong>Results</strong>: The highest relative risk of breast cancer was seen in Isfahan (4.96), Shahreza (2.37), Dehaghan (5.01), Lenjan (2.33), and Najafabad (2.68), respectively. For ovarian cancer, Isfahan (4.29), Shahreza (2.51), Dehaghan (5.02), Lenjan (2.06), Najafabad (2.00), and Borkhar (2.39) had the highest relative risk, respectively. However, no significant difference was seen among the cities for uterine cancer (P &gt; 0.05).</p><p><strong>Conclusions</strong>: Since ovarian and uterine cancers are the less prevalent disease in comparison with breast cancer, the preciseness of these estimates were improved remarkably over simple mapping models. Based on this model, the estimates were done according to the correlation between the diseases. After recognizing the spatial patterns of the shared and specific risk factors and reviewing of previous studies, regardless of risk factors data, environmental pollution arises as a potential risk factor.</p>http://ijpm.mui.ac.ir/index.php/ijpm/article/view/2477http://ijpm.mui.ac.ir/index.php/ijpm/article/download/2477/717718317