Khoshdel Alireza, Alimohammadi M, Sepandi M, Alimohamadi Y, Jalali P, Janani M
Military Epidemiology Research Center, Aja University of Medical Sciences, Tehran, Iran.
Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran.
BMJ Mil Health. 2020 Nov;166(E):e8-e12. doi: 10.1136/jramc-2018-001151. Epub 2019 Feb 16.
Colorectal cancer (CRC) is one of the most prevalent cancers among Iranian people. The study of spatio-temporal distribution of disease has an important role in the design of disease prevention programmes. The purpose of the current study was to describe the spatio-temporal distribution of CRC in the Iranian military community as a sample of the Iranian population.
In the current ecological study, all registered cancer cases in the Iranian military community during the period 2007-2016 were considered. To identify hotspots, Getis-Ord Gi statistics were used. All analyses were performed using ArcGIS 10.5 and Excel 2010.
The highest incidences of CRC in 2007-2008, 2009-2010 and 2011-2012 were recorded in Kermanshah province. The highest incidences of CRC in 2013-2014 were seen in Kermanshah, Ghilan, Tehran and North Khorasan. In 2007-2008 and 2009-2010, hotspots were detected in West Azarbayjan. In 2011-2012, hotspots were detected in Zanjan and Qazvin. In 2013-2014, a hotspot was detected in Qazvin. Finally, West Azerbaijan was the hotspot for CRC in 2015-2016.
The incidence of CRC in men was higher than in women. Also it appeared that North and North West Iran were risk areas for this disease, and so these areas should be considered in the design of disease prevention programme for this cancer type. Additionally, the determination of individual risk factors in the aforementioned geographical areas can play an important role in the prevention of this type of cancer.
结直肠癌（CRC）是伊朗人群中最常见的癌症之一。疾病时空分布的研究在疾病预防计划的设计中具有重要作用。本研究的目的是描述伊朗军事社区作为伊朗人口样本的结直肠癌时空分布情况。
在当前的生态学研究中，考虑了2007年至2016年期间伊朗军事社区所有登记的癌症病例。为了识别热点地区，使用了Getis-Ord Gi统计量。所有分析均使用ArcGIS 10.5和Excel 2010进行。
2007 - 2008年、2009 - 2010年和2011 - 2012年结直肠癌发病率最高的地区是克尔曼沙阿省。2013 - 2014年结直肠癌发病率最高的地区是克尔曼沙阿、吉兰、德黑兰和北霍拉桑。2007 - 2008年和2009 - 2010年，在西阿塞拜疆发现了热点地区。2011 - 2012年，在赞詹和加兹温发现了热点地区。2013 - 2014年，在加兹温发现了一个热点地区。最后，2015 - 2016年西阿塞拜疆是结直肠癌的热点地区。
男性结直肠癌发病率高于女性。此外，伊朗北部和西北部似乎是这种疾病的风险地区，因此在设计针对这种癌症类型的疾病预防计划时应考虑这些地区。此外，确定上述地理区域的个体风险因素在预防这种类型的癌症中可以发挥重要作用。
