Methods: A nested case-control study.
方法：采用成组病例对照研究。
Methods Retrospective case-control study.
方法采用回顾性对照研究。
Methods 1: m matched case-control study was conducted.
方法采取1：M匹配的病例对照研究。
Methods: The case-control study was used for the investing.
方法：采用病例对照研究方法。
Methods Epidemiological field survey and case-control study.
方法采用流行病学现场调查和病例对照研究。
Methods Cross-sectional study and case-control study were performed.
方法现况调查和病例对照研究。
Methods Case-control study was employed for genetic epidemiological survey.
方法采用病例-对照研究方法进行哮喘遗传流行病学调查。
Methods Prevalence survey and case-control study on risk factors was conducted.
方法采用现况调查和危险因素病例对照研究法进行研究。
A Case-control Study of Gastric Cancer and Nutritional Factors in Marseille, France.
病例对照研究胃癌和营养因素，在马赛，法国。
Method This study was underwent with the clinical case-control study of the Epidemiology.
方法采用临床流行病学病例对照研究方法进行研究。
Methods: A 1:1 Case-control study of 139 cases who were in six hospitals of Harbin was used.
方法：对139例在哈尔滨市六大医院住院的经临床确诊的患者进行1：1配比病例对照研究。
Methods a case-control study was conducted in Xicheng District and Haidian District of Beijing in 2004.
方法于2004年在北京市西城区和海淀区进行病例对照调查。
Relationship between electromagnetic field exposure and dementia: a population-based case-control study.
电磁场暴露与痴呆：基于人群的病例对照研究。
METHODS: 245 UC patients and 300 healthy controls of Chinese Han descent were included in the case-control study.
方法：本研究为病例对照关联研究，包括245例溃疡性结肠炎患者和300例健康对照，全部为中国汉族人群。
RESULTS The case-control study included 26 case subjects with the hemolytic-uremic syndrome and 81 control subjects.
结果该病例对照研究纳入了26例有溶血性尿毒症综合征的病例受试者以及81名对照受试者。
Methods a 1:1 matched case-control study with 50 pairs on risk factors of cataract was carried out in Hefei city and Dingyuan county.
方法采用1：1病例对照研究方法对合肥市及定远县50对老年性白内障及对照进行问卷调查。
Methods a 1:1 matched case-control study was conducted 175 patients with gastric cancer and 175 controls were surveyed by questionnaire.
方法采用1：1配对的病例对照研究，对175对病例及对照进行饮食及生活行为问卷调查。
Methods A 1:1 matched case-control study was performed exposure to analyse some exposure factors in home environment that related with asthma.
方法应用1∶1配对的病例对照研究方法，调查和分析家庭环境中与儿童哮喘有关的暴露因素。
Methods: By the case-control study, 65 cases with acute cerebral infarction patients group and 50 healthy persons control group were selected.
方法：采用病例对照的研究方法，选择急性脑梗死患者65例为病例组，健康体检者50例为对照组。
A matched case-control study on the relationships between cigarette smoking, alcohol drinking, hypertension and cerebral hemorrhage was conducted.
采用以医院为基础的配比病例对照研究方法，探讨了吸烟、饮酒及高血压与脑出血的关系。
Methods A large scale of case-control study was conducted in Chaoshan region of China, which is one of high incidence district of esophageal cancer.
方法在中国食管癌高发区之一潮汕地区进行了一项大型的病例-对照研究。
Objective: to make an inquiry into the probable risk factors for antibiotic multi-resistance bacterial infection in patients with liver cirrhosis by case-control study.
目的：用病例对照研究探讨肝炎肝硬化患者发生多重耐药菌感染的危险因素。
For that we have selected 134 inpatients to performed case-control study and employed single factor and multiple factor analysis in order to get a deeper understand about risk factor of LI.
为此，我们选择了134例住院病人进行了病例对照研究，并采用单因素及多因素分析，旨在对LI发病的危险因素有更深入的了解。
Methods: From March 2003 through March 2006, 264 patients with ACST, 40 cases were randomly selected to perform emergent open bile duct exploration and T-tube drainage for case-control study.
方法：病例选择自2003年3月至2006年3月间我科收治的ACST患者264例，在本研究初期随机选取40例胆总管结石致acst的患者入院后行急诊开腹胆总管探查、T管引流术，作为手术对照组。
Preterm delivery was associated with maternal drug-treated hypertension and impaired renal function. A matched case-control study showed no evidence of increased renal allograft loss after pregnancy.
早产与母亲服药治疗高血压及肾功能损害有关。一项配对病例对照研究发现没有证据表明妊娠会增加移植肾失功发生率。
Purpose To explore the risk factors of hepatocellular carcinoma (HCC) with the aid of nested case control study.
目的应用巢式病例对照研究方法，探讨原发性肝癌（HCC）的危险因素。
In order to evaluate a possible association between age of first parturition and the number of births and pancreatic cancer, we conducted a case control study with a hospital background.
为了评价首胎年龄和生育数与胰腺癌的发生可能存在的关系，作者做了以医院为基础的病例对照研究。
Methods Case control study of 544 high risk persons and 448 controls from Beijing, Nanjing, Changchun.
方法来自北京、南京、长春544名性滥者和448名对照进行病例对照研究。
Methods Case control study of 544 high risk persons and 448 controls from Beijing, Nanjing, Changchun.
方法来自北京、南京、长春544名性滥者和448名对照进行病例对照研究。
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