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Bayesian adjustment of gastric cancer mortality rate in the presence of misclassification

World Journal of Gastrointestinal Oncology 2017年第4期9卷 160-165页

作者： Nastaran Hajizadeh Mohamad Amin Pourhoseingholi Ahmad reza Baghestani Alireza Abadi mohammad reza zali Department of Biostatistics Shahid Beheshti University of Medical Sciences Basic and Molecular Epide-miology of Gastrointestinal Disorders Research Center Research Institute for Gastroenterology and Liver DiseasesShahid Beheshti University of Medical Sciences Gastroenterology and Liver Diseases Research Center Research Institute for Gastroenterology and Liver DiseasesShahid Beheshti University of Medical Sciences

AIM To correct for misclassification error in registering causes of death in Iran death registry using Bayesian method.METHODS National death statistic from 2006 to 2010 for gastric cancer which reported annually by the Ministry of Health and Medical Education included in this study. To correct the rate of gastric cancer mortality with reassigning the deaths due to gastric cancer that registered as cancer without detail, a Bayesian method was implemented with Poisson count regression and beta prior for misclassified parameter, assuming 20% misclassification in registering causes of death in Iran.RESULTS Registered mortality due to gastric cancer from 2006 to 2010 was considered in this study. According to the Bayesian re-estimate, about 3%-7% of deaths due to gastric cancer have registered as cancer without mentioning details. It makes an undercount of gastric cancer mortality in Iranian population. The number and age standardized rate of gastric cancer death is estimated to be 5805(10.17 per 100000 populations), 5862(10.51 per 100000 populations), 5731(10.23 per 100000 populations), 5946(10.44 per 100000 populations), and 6002(10.35 per 100000 populations), respectively for years 2006 to 2010.CONCLUSION There is an undercount in gastric cancer mortality in Iranian registered data that researchers and authorities should notice that in sequential estimations and policy making.

关键词：错误分类贝叶斯的方法死亡的原因胃的癌症伊朗

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Bayesian adjustment for over-estimation and under-estimation of gastric cancer incidence across Iranian provinces

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World Journal of Gastrointestinal Oncology 2017年第2期9卷 87-93页

作者： Nastaran Hajizadeh Mohamad Amin Pourhoseingholi Ahmad reza Baghestani Alireza Abadi mohammad reza zali Department of Biostatistics Shahid Beheshti University of Medical Sciences Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center Research Institute for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical Sciences Gastroenterology and Liver Diseases Research Center Research Institute for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical Sciences

AIM To correct the misclassification in registered gastric cancer incidence across Iranian provinces in cancer registry data. METHODS Gastric cancer data is extracted from Iranian annual of national cancer registration report 2008. A Bayesian method with beta prior is implemented to estimate the rate of misclassification in registering patient'spermanent residence in neighboring province. Each time two neighboring provinces with lower and higher than 100% expected coverage of cancer cases are selected to be entered in the model. The expected coverage of cancerous patient is reported by medical university of each province. It is assumed that some cancer cases from a province with a lower than 100% expected coverage are registered in their neighboring province with more than 100% expected coverage. RESULTS The condition was true for 21 provinces from a total of 30 provinces of Iran. It was estimated that 43% of gastric cancer cases of North and South Khorasan provinces in north-east of Iran was registered in Razavi Khorasan as the neighboring facilitate province; also 72% misclassification was estimated between Sistan and balochestan province and Razavi Khorasan. The misclassification rate was estimated to be 36% between West Azerbaijan province and East Azerbaijan province, 21% between Ardebil province and East Azerbaijan, 63% between Hormozgan province and Fars province, 8% between Chaharmahal and bakhtyari province and Isfahan province, 8% between Kogiloye and boyerahmad province and Isfahan, 43% Golestan province and Mazandaran province, 54% between Bushehr province and Khozestan province, 26% between Ilam province and Khuzestan province, 32% between Qazvin province and Tehran province(capital of Iran), 43% between Markazi province and Tehran, and 37% between Qom province and Tehran. CONCLUSION Policy makers should consider the regional misclassification in the time of programming for cancer control, prevention and resource allocation.

关键词：癌症发生登记错误分类贝叶斯的修正胃的癌症伊朗

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Trend of hepatocellular carcinoma incidence after Bayesian correction for misclassified data in Iranian provinces

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World Journal of Hepatology 2017年第15期9卷 704-710页

作者： Nastaran Hajizadeh Ahmad reza Baghestani Mohamad Amin Pourhoseingholi Sara Ashtari Zeinab Fazeli Mohsen Vahedi mohammad reza zali Gastroenterology and Liver Diseases Research Center Research Institute for Gastroenterology and Liver DiseasesShahid Beheshti University of Medical Sciences Department of Biostatistics Shahid Beheshti University of Medical Sciences Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center Research Institute for Gastroenterology and Liver DiseasesShahid Beheshti University of Medical Sciences Department of Biostatistics University of Social Welfare and Rehabilitation Sciences

AIM To study the trend of hepatocellular carcinoma incidence after correcting the misclassification in registering cancer incidence across Iranian provinces in cancer registry data.METHODS Incidence data of hepatocellular carcinoma were extracted from Iranian annual of national cancer registration reports 2004 to 2008.A Bayesian method was implemented to estimate the rate of misclassification in registering cancer incidence in neighboring province.Abeta prior is considered for misclassification parameter.Each time two neighboring provinces were selected to be entered in the Bayesian model based on their expected coverage of cancer cases which is reported by medical university of the province.It is assumed that some cancer cases from a province that has an expected coverage of cancer cases lower than 100% are registered in their neighboring facilitate province with more than 100% expected coverage.RESULTS There is an increase in the rate of hepatocellular carcinoma in Iran.Among total of 30 provinces of Iran,21 provinces were selected to be entered to the Bayesian model for correcting the existed misclassification.Provinces with more medical facilities of Iran are Tehran(capital of the country),Razavi Khorasan in north-east of Iran,East Azerbaijan in north-west of the country,Isfahan in central part and near to Tehran,Khozestan and Fars in south and Mazandaran in north of the Iran,had an expected coverage more than their expectation.Those provinces had significantly higher rates of hepatocellular carcinoma than their neighboring provinces.In years 2004 to 2008,it was estimated to be on average 34% misclassification between North Khorasan province and Razavi Khorasan,43% between South Khorasan province and Razavi Khorasan,47% between Sistan and balochestan province and Razavi Khorasan,23% between West Azerbaijan province and East Azerbaijan province,25% between Ardebil province and East Azerbaijan province,41% between Hormozgan province and Fars province,22% between Chaharmahal and bakhtyari province and Isfahan pr

关键词： hepatocellular 癌的趋势癌症发生登记错误分类贝叶斯的修正

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Predictive value and main determinants of abnormal features of intraoperative cholangiography during cholecystectomy

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Hepatobiliary & Pancreatic Diseases International 2011年第3期10卷 308-312页

作者： Shahram Yousefpour Azary Heshmat Kalbasi Ali Setayesh Mirhadi Mousavi Asad Hashemi Mahsa Khodadoostan mohammad reza zali Amir Houshang mohammad Alizadeh Research Center for Gastroenterology and Liver Diseases Shahid Beheshti University of Medical SciencesTaleghani Hospital Arad General Hospital

BACKGROUND:The major issue with intraoperative cholangiography (IOC) is whether its diagnostic accuracy for common bile duct (CBD) stones matches that of other diagnostic procedures,and thus,whether it will become a routine diagnostic procedure.The current study aimed to address the main determinants of CBD stone diagnosis in IOC among an Iranian population.METHODS:In a retrospective review database-based study conducted in Taleghani Hospital in Tehran between 2006 and 2008,baseline data and perioperative information of 2060 patients (male to female ratio 542:1518,mean age 53.7 years) who were candidates for cholecystectomy and underwent concomitant IOC for confirming CBD stones were reviewed.The predictive power of this procedure for diagnosis of abnormal biliary ducts with the focus on biliary stones was determined.RESULTS:Overall mortality and morbidity following cholecystectomy in the study population were 0.6% and 2.6%,respectively.Both early mortality and morbidity due to cholecystectomy were higher in male than female.The prevalence of CBD stones in IOC was 3.4% (5.2% in male and 2.8% in female,P=0.008).Among those without gallstones,8.7% had CBD stones and only 3.1% had concomitant gallstones and CBD stones.The main predictors of stone appearance as an abnormal feature of IOC during cholecystectomy were:advanced age (OR=1.022,P=0.001),male gender (OR=1.498,P=0.050),history of abdominal surgery (OR=1.543,P=0.040) and preoperative endoscopic retrograde cholangiopancreatography (OR=5.400,P<0.001).CONCLUSIONS:IOC is a safe and accurate method for the assessment of bile duct anatomy and stones.Therefore,the routine use of IOC within cholecystectomy seems reasonable and is recommended.

关键词： intraoperative cholangiography common bile duct stone cholecystectomy predictive value diagnostic accuracy

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Helicobacter pylori infection and expression of DNA mismatch repair proteins

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World Journal of Gastroenterology 2008年第43期14卷 6717-6721页

作者： Vahid Mirzaee Mahsa Molaei Hamid Mohaghegh Shalmani mohammad reza zali Department of Gastroenterology Rafsanjan University of Medical SciencesRafsanjanIran Department of Patholology Research Center for Gastroenterology and Liver DiseaseShaheed Beheshti UniversityM.C.TehranIran Research assistant Research Center for Gastroenterology and Liver DiseaseShaheed Beheshti UniversityM.C.TehranIran Department of Gastroenterology Head of Research Center for Gastroenterology and Liver DiseaseShaheed Beheshti UniversityM.C.TehranIran

瞄准：为了决定 DNA (MMR ) 蛋白质的表示，包括 hMLH1 和 hMSH2，在在病人与或没有 Helicobacter 的胃的上皮细胞， pylori (H pylori ) 感染了胃炎。方法：五十个 H pylori 积极的病人和 50 H pylori 否定的病人在学习被注册。在有非... 详细信息

瞄准：为了决定 DNA (MMR ) 蛋白质的表示，包括 hMLH1 和 hMSH2，在在病人与或没有 Helicobacter 的胃的上皮细胞， pylori (H pylori ) 感染了胃炎。方法：五十个 H pylori 积极的病人和 50 H pylori 否定的病人在学习被注册。在有非溃疡消化不良的病人的内视镜检查法期间，二窦和二语料库活体检视为组织学的检查(Giemsa 污点) 并且为免疫被拿 hMLH1 和 hMSH2 的组织化学的染色。结果：为染色的 hMLH1 表明了确实的上皮的房间原子核的百分比是 84.14 +/-7.32% 在 H pylori 否定的病人，当它是 73.34 +/- 时 10.10% 在 H pylori 积极的病人(P < 0.0001 ) 。没有有效差量关于为染色的 hMSH2 表明了确实的上皮的房间原子核的百分比在二个组之间被看见(81.16 +/-8.32% 在 pylori 否定的 H 对 78.24 +/-8.71% 在 H pylori 积极的病人；P = 0.09 ) 。结论：这研究显示 H pylori 可能通过它影响 DNA MMR 系统的能力部分地至少支持胃的癌的开发。

关键词：幽门 DNA 失配修复 hMLH1 hMSH2

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Frequent loss of heterozygosity at 8p22 chromosomal region in diffuse type of gastric cancer

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World Journal of Gastroenterology 2007年第24期13卷 3354-3358页

作者： Hedayat Allah Hosseini Ali Ahani Hamid Galehdari Ali mohammad Froughmand Masoud Hosseini Abdolrahim Masjedizadeh mohammad reza zali Biochemistry Department Medical school Ahwaz JondishapoorUniversity of Medical Science Ahwaz Iran Biology Department Shahid Beheshti University Tehran Iran. Genetics Department Shahid Chamran University Ahwaz Iran Research Center of Gastroenterology and Liver Disease Shahid Beheshti University of Medical Science Tehran Iran

AIM: To study the loss of heterozygosity (LOH) at 8p21-23 locus in diffuse gastric cancer.METHODS: To evaluate the involvement of this region in gastric cancer, we used eight microsatellite markers covering two Mb of mentioned region, to perform a high-resolution analysis of allele loss in 42 cases of late diffuse gastric adenocarcinoma.RESULTS: Six of these STS makers: D8S1149, D8S1645, D8S1643, D8S1508, D8S1591, and D8S1145 showed 36%, 28%, 37%, 41%, 44% and 53% LOH, respectively.CONCLUSION: A critical region of loss, close to the NAT2 locus and relatively far from FEZ1 gene currently postulated as tumor suppressor gene in this region.

关键词：染色体基因胃癌症状

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H pylori infection and reflux oesophagitis: A case-control study

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World Journal of Gastroenterology 2006年第35期12卷 5658-5662页

作者： Rahim Masjedizadeh Eskandar Hajiani Koorosh MoezArdalan Saeed Samie mohammad-Javad Ehsani-Ardakani Ali Daneshmand mohammad-reza zali Division of Gastroenterology and Hepatology Department of Interna Medicine Ahwaz Jundishapur University of Medical Sciences Ahwaz Iran The National Research Department of Foodborne Diseases(NRDFD) The Research Center of Gastroenterology and LiverDiseases (RCGLD) Shaheed Beheshti University of MedicaSciences Iran

AIM: To examine the relationship between H pylori and gastro-oesophageal reflux disease (GORD) in Iran. METHODS: In this study 51 GORD patients (referred to endoscopy at Taleghani hospital) were compared with 49 age-sex matched controls. Diagnosis of H pylori was made by gastric mucosal biopsy and rapid urease test (positive if the result of one or both diagnostic methods was positive). Updated Sydney system was used to report histopathological changes. RESULTS: The frequency of H pylori infection based on rapid urease test and histology was 88.2% (45) in patients and 77.6% (38) in controls, which showed no significant difference. The frequency of H pylori infection was significantly higher in the antrum than in the corpus and cardia. The mean activity, inflammation, and gastritis scores were also higher in the antrum of patients than in the antrum of controls. The mean scores were significantly higher in the corpus of controls than in the corpus of patients. Diffuse active gastritis was observed in a significantly larger number of controls, while the frequency of diffuse chronic gastritis was higher in patients. There was no significant difference in the frequency of other histological findings between patients and controls.CONCLUSION: H pylori infection cannot prevent GORD in this region.

关键词：幽门螺杆菌细菌感染食管炎临床

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Allele and haplotype frequencies for HLA-DQ in Iranian celiac disease patients

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World Journal of Gastroenterology 2014年第20期20卷 6302-6308页

作者： mohammad Rostami-Nejad Jihane Romanos Kamran Rostami Azita Ganji mohammad Javad Ehsani-Ardakani Ali-reza Bakhshipour Homayoun Zojaji Seyed reza Mohebbi mohammad-reza zali Cisca Wijmenga Department of Celiac Disease Gastroenterology and Liver Diseases Research Centers Shahid Beheshti University of Medical Sciences Tehran *** Iran Department of Genetics University of Groningen University Medical Centre of Groningen 9700 RB Groningen The Netherlands Department of Genetics Institute of Human Genetics Lebanese American University Byblos 36 Lebanon Department of Gastroenterology Worcestershire Royal Hospital Worcester WR5 1DD United Kingdom Department of Gastroenterology Imam Reza Hospital Mashhad University of Medical Sciences Mashhad 1351143 Iran Department of Gastroenterology Zahedan University of Medical Sciences Zahedan 2143453 Iran

AIM:To assess the distribution of human leukocyteantigen(HLA)-DQ2 and-DQ8 in Iranian celiac disease(CD)patients and compare them to healthy Iranian controls.METHODS:To predict the HLA-DQA1 and-DQB1genes,we used six previously reported HLA-tagging single nucleotide polymorphism to determine HLA genotypes in 59 Iranian patients with‘biopsy-confirmed’CD and in 151 healthy Iranian individuals.To test the transferability of the method,50 cases and controls were also typed using a commercial kit that identifies individual carriers of DQ2,DQ7 and DQ8 alleles.RESULTS:In this pilot study 97%of CD cases(n=57)and 58%of controls(n=87)were carriers of HLADQ2 and/or HLA-DQ8 heterodimers,either in the homozygous or heterozygous state.The HLA-DQ pattern of these 57 CD patients:heterozygous DQ2.2(n=14)and homozygous DQ2.2(n=1),heterozygous DQ2.5(n=33)and homozygous DQ2.5(n=8),heterozygous DQ8(n=13)and homozygous DQ8(n=2).Two CD patients were negative for both DQ2 and DQ8(3%).CONCLUSION:The prevalence of DQ8 in our CD population was higher than that reported in other populations(25.4%).As reported in other populations,our results underline the primary importance of HLA-DQ alleles in the Iranian population’s susceptibility to CD.

关键词： Human leukocyte antigen typing Validation Suscepti

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Intra-familial prevalence of hepatitis B virologic markers in HBsAg positive family members in Nahavand, Iran

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World Journal of Gastroenterology 2005年第31期11卷 4857-4860页

作者： Amir Houshang mohammad Alizadeh Mitra Ranjbar Shahin Ansari Seyed Moayed Alavian Hamid Mohaghegh Shalmani Leila Hekmat mohammad reza zali Research Center for Gastroenterology and Liver Disease Hemedan University of Medical Sciences Baghiatallah University of Medical Sciences

AIM: To determine the prevalence of hepatitis B in Nahavand and evaluate the HBsAg positive prevalence in families with a member who was confirmed to have HBV infection.METHODS: This study was performed in two phases. In the first phase, 1 824 subjects in Nahavand city were selected. The interviewers visited the houses of chosen families to fill the questionnaire and take the blood samples.All subjects signed an informed consent before interviews and blood sampling. The samples were evaluated for HBV virologic markers. In the second phase, 115 HBsAg-positive cases were enrolled and evaluated for HBV virologic markers.RESULTS: The prevalence of positive HBsAg in Nahavand was 2.3%. The most frequent relatives of index cases were sons and daughters (32.2% and 23.5% respectively).Twelve (11%) of all family members were HBsAg positive.Fifty (56.2%) were isolated HBsAb positive and only one person (2.5%) was isolated HBcAb positive. The higher rates of HBsAg marker were detected in the brothers (1-25%) and fathers (1-12.5%). The infection rate in husbands and wives of index cases was 10%. Only two (16.7%) of all HBsAg-positive participants reported previous HBV vaccination.CONCLUSION: The prevalence of intra-familial HBV infection is lower in Nahavand of Iran compared to other studies.More attention should be paid to HBV vaccination and risk-lowering activities.

关键词：遗传因素乙型肝炎病毒 HBsAg 伊朗流行病

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Clinical features of hepatopulmonary syndrome in cirrhotic patients

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World Journal of Gastroenterology 2006年第12期12卷 1954-1956页

作者： Amir Houshang mohammadAlizadeh Seyed reza Fatemi Vahid Mirzaee Manoochehr Khoshbaten Bahman Talebipour Afsaneh Sharifian Ziba Khoram mohammad reza zali Farhad Haj-sheikh-oleslami MasoomehGholamreza-shirazi Research Center for Gastroenterology and Liver Disease Shaheed Beheshti University of Medical SciencesTehranIran Cardiologist Shaheed Beheshti University of Medical SciencesTehranIran

瞄准：评估频率，临床并且帕拉肝肺症候群(HPS ) 并且到的临床的特征在伊朗在病人在这症候群的诊断决定他们的预兆的价值。方法：54 个肝脏硬化症的病人经历了对比由二位心脏病专家检测肺内、心内的分流的提高的回响心动描记法。动脉的... 详细信息

瞄准：评估频率，临床并且帕拉肝肺症候群(HPS ) 并且到的临床的特征在伊朗在病人在这症候群的诊断决定他们的预兆的价值。方法：54 个肝脏硬化症的病人经历了对比由二位心脏病专家检测肺内、心内的分流的提高的回响心动描记法。动脉的血氧， O (2 ) 坡度(A-a ) 和正统说法被气体(ABG ) 测试的动脉的血测量。为 HPS 的诊断标准积极的病人被定义为表明肺内的动脉的膨胀的临床的 HPS 盒子和那些，但是另外的标准(动脉的血血氧不足) 都没被定义为 lHPS 盒子。HPS 频率，敏感，积极、否定的预兆的价值临床并且帕拉临床的特征被学习。结果：十(18.5%) 并且七(13%) 盒子分别地有临床、无临床症状的 HPS。最普通的病原学是肝炎 B。呼吸困难(100%) 和青紫(90%) 是最流行的临床的特征。呼吸困难并且打分别地是最敏感、特定的临床的特征。没有重要关系被发现在之间 HPS 和脾大，腹水，浮肿，黄疸，尿少，和并行的静脉。HPS 在肝炎 B 是更流行的。PaO (2 ) 30 并且他们的和，是在 HPS 病人的最珍贵的否定、积极的预兆的价值。

关键词：肝硬化超声波心动描记术综合症临床表现

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