设计：病例-对照研究。
DESIGN: Randomized case control study.
设计：随机对照研究。
A case control study nested in cohort was conducted.
本文进行了一项队列内病例对照研究。
DESIGN: Prospective case control study based on experimental animals.
设计：以实验动物为研究对象，前瞻性、对照研究。
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: A case control study including 100 patients and 110 controls of the same race was performed.
方法：采用病例对照研究，包括10 0例心肌梗死患者及110例具有相同民族的对照人群；
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。
Methods A case control study was carried out with PCR RFLP and radioautograph in 83 non diabetics and 211 diabetics.
方法采用PCRRFLP及放射自显影技术对83名健康人和2 11例糖尿病患者的上述多态进行病例对照关联研究。
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 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。
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。
Neural tube defects; Case control study; Risk factors.
神经管畸形；病例对照研究；危险因素。
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。
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。
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。
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。
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: 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 One hundred and eleven cases with onychomycosis were conducted by a 1:1 matched case-control study. Data were analyzed by a single-factor and multifactor conditional logistic regress analysis.
方法对111例甲真菌病患者进行1：1配比的病例对照研究，采用单因素和多因素的条件回归分析。
Methods: A nested case-control study.
方法：采用成组病例对照研究。
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。
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。
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。
Another aim of the present study was to assess the association between the human CYP4F2 gene and MI and EH, using a haplotype-based case-control study with a separate analysis of the gender groups.
本研究的另一目的就是应用病例对照单体型分析的方法研究在不同性别中，CYP4F 2基因单体型与心肌梗死的关系以及与高血压的关系。
To investigate the genetic background of EH, a community-based case-control study was performed in Jiangsu Province.
本研究在江苏省农村社区进行，采用关联分析方法研究EH多基因遗传背景。
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。
Methods Retrospective case-control study.
方法采用回顾性对照研究。
DESIGN: Completely randomized case-control study was adopted.
设计：完全随机对照实验研究。
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