A case control study was conducted. 184 male silicosis cases and 111 male controls were collected.
采用病例对照设计，选择184例男性矽肺病人为病例，111例男性无矽肺矿工为对照。
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。
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。
The prevalence survey of hyperlipidemia and its case control study on risk factors were carried out in 903 middle or old person.
对903名中老年人群进行高脂血症的现况调查和危险因素的病例对照研究。
Methods This is a case control study. 40 type 2 diabetic patients with gallstones(DG)and 40 type 2 diabetic patients without gallstones(NDG)were enrolled.
方法采用病例对照研究的方法，观察2型糖尿病伴胆囊结石组（DG）及不伴胆囊结石组（NDG）各40例。
Methods Reviewing investigation was used for the MV coverage rate and immunization efficacy (ve), a case control study was carried for seeking risk factors.
方法采用回顾性调查研究方法计算麻疹疫苗(MV)效力(VE)，采用病例对照研究进行传播因素分析。
Methods A case control study was conducted. 152 BP patients and 152 workers occupationally exposed to benzene without poisoning manifestations were involved.
方法采用病例-对照研究，选择152名苯中毒工人为病例组，152名接触苯而无中毒表现的工人为对照组。
Methods a case control study with 100 cases of CHD and 100 pair matched controls was conducted with occupational stress factor scales and multivariate analysis.
方法应用职业紧张因素测试表，对100例冠心病患者1∶1配对病例对照进行多因素分析。
METHODS A case control study was carried out using the cognitive laterality battery of neuropsychological test (CLB), based on 17 diagnosed left frontal tumor patients.
方法采用认知侧化成套测验（CL B）对17例左侧额叶肿瘤患者及正常对照组进行研究。
DESIGN: Randomized case control study to patients based on diagnosis SETTING: department of general diseases, rehabilitation room and ultrasound department of a university hospital.
设计：以患者为研究对象，以诊断为依据的随机对照研究。单位：一所大学医院的综合科、康复室及超声波室联合进行的课题研究。
Method: Case control study was used to observe the changes of serum lipid levels in type 2 diabetes patients and type 2 diabetic nephropathy patients with hypertension or normotension.
方法：采用病例对照研究的方法观察2型糖尿病、2型糖尿病肾病合并高血压和不合并高血压患者血脂水平的变化。
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。
Inclusion criteria: Typical literatures, basic experimental research that restrictedly and scientifically designed, prospective randomized clinical research as well as case control study.
纳入标准：经典文献、经严格科学设计的基础实验研究、前瞻性随机性临床研究及病例对照研究。
Mehtods a case control study was carried out and polymerase chain reaction (PCR) technique was used to identify GSTM1, GSTT1 genotype in 89 cases of primary gastric cancer and 94 controls.
方法采用病例对照分子流行病学研究方法和聚合酶链反应技术，检测89例原发性胃癌病例和94例对照GSTM 1和GSTT1基因型。
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。
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。
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 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 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 1: m matched case-control study was conducted.
方法采取1：M匹配的病例对照研究。
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 Cross-sectional study and case-control study were performed.
方法现况调查和病例对照研究。
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 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。
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: 86 newly diagnosed cases of esophageal cancer in 1999 and 158 controls were investigated by case - control study.
方法：采用病例对照研究方法，对 1999 年 86例新发病例和 158 例对照进行了调查和分析。
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 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。
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。
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