Ahmadi Ali, Salehi Fatemeh
Modeling in Health Research Center, Shahrekord University of Medical Sciences, Shahr-e Kord, Iran.
Department of Epidemiology and Biostatistics, School of Public Health, Shahrekord University of Medical Sciences, Shahr-e Kord, Iran.
J Res Med Sci. 2018 Jan 29;23:4. doi: 10.4103/jrms.JRMS_788_17. eCollection 2018.
Awareness of observed and expected incidence of cancers is so important in managing cancer as the third mortality cause in Iran. In the present study, we evaluated observed and the expected incidence of common cancers in Chaharmahal and Bakhtiari province.
This study is a Secondary data analysis. All data about pathology-based cancer registration (Cancer diagnosis was based on pathological laboratory, ICD-O2) in Chaharmahal and Bakhtiari in Southwestern Iran in 2010-2014 was used. By dividing the number of registered cases of each cancer in every age group into the total observed cancers in that age group, the observed ratio of each cancer in that age group was calculated. Then, using the proposed coefficients Parkin and age-standardized cancer ratio method, the expected ratios in each age group, were calculated.
In 5 years study, 2918 new cases of cancer were recorded. Out of them, 1735 (59.46%) were male. The annual average total occurrence of all cancers in this province was 68.2/100,000 populations. The observed incidence ratios of common cancers, including stomach, breast, colorectal, thyroid, lymph nodes, ovaries, gall bladder, the bladder and the brain, were 0.11, 0.12, 0.09, 0.06, 0.02, 0.03, 0.01, 0.08, and 0.05, respectively. The expected incidence ratios of above-mentioned cancers are 0.11, 0.13, 0.1, 0.06, 0.02, 0.03, 0.01, 0.08, and 0.05, respectively. Based on observed (O) and expected (E) comparison, breast and colorectal cancer had higher incidence than expected ratio.
Our results showed that in our area, treatment programs and health plans should focus on cancer registration, especially on common cancers and reevaluate breast and colorectal cancer occurrence. Therefore, the plan for the control and prevention of this cancer must be a high priority for health policymakers.
了解癌症的观察发病率和预期发病率对于管理癌症至关重要，因为癌症是伊朗的第三大死因。在本研究中，我们评估了恰哈马哈勒-巴赫蒂亚里省常见癌症的观察发病率和预期发病率。
本研究为二次数据分析。使用了2010 - 2014年伊朗西南部恰哈马哈勒-巴赫蒂亚里基于病理学的癌症登记的所有数据（癌症诊断基于病理实验室，ICD - O2）。通过将每个年龄组中每种癌症的登记病例数除以该年龄组中观察到的癌症总数，计算出该年龄组中每种癌症的观察比率。然后，使用提议的系数帕金和年龄标准化癌症比率方法，计算每个年龄组的预期比率。
在为期5年的研究中，记录了2918例新癌症病例。其中，1735例（59.46%）为男性。该省所有癌症的年平均总发病率为68.2/10万人口。常见癌症的观察发病率比率，包括胃癌、乳腺癌、结直肠癌、甲状腺癌、淋巴结癌、卵巢癌、胆囊癌、膀胱癌和脑癌，分别为0.11、0.12、0.09、0.06、0.02、0.03、0.01、0.08和0.05。上述癌症的预期发病率比率分别为0.11、0.13、0.1、0.06、0.02、0.03、0.01、0.08和0.05。基于观察值（O）和预期值（E）的比较，乳腺癌和结直肠癌的发病率高于预期比率。
我们的结果表明，在我们地区，治疗方案和健康计划应侧重于癌症登记，尤其是常见癌症，并重新评估乳腺癌和结直肠癌的发病情况。因此，控制和预防这种癌症的计划必须是卫生政策制定者的高度优先事项。
