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 the study was carried out by case control analysis of the clinical manifestations and the data from cine selective coronary angiography.
方法对经冠状动脉造影检查的冠心病患者进行临床表现和造影结果对照分析。
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。
Cohort studies are generally preferred to case control studies, since they involve far fewer statistical problems and generally produce more reliable answers.
队列研究一般优先用于病例对照研究，由于其很少涉及的统计学问题，产生的结果一般比较可靠。
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。
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。
In this case, the transition from manual to auto mated control would take place on the entrance ramp.
在这种情况下，从手动到自动匹配控制的过渡将在入口坡道上进行。
Although robots are under our control now, that might not always be the case.
虽然机器人现在在我们的控制之下，但情况可能并不总是如此。
Those types of studies have been coming out in the last 10-15 years and have not supported the original findings [from case-control groups].
这一类型的研究持续了10到15年，结果表明，通过病例对照研究而得出的结论站不住脚。
In this case, control costs would account for less than 10 percent of the revenue generated by exports alone.
在这个例子中，防治费用在仅由出口创造的收入中所占的比例还不到10%。
Many researchers fault case-control work as being a weak method for showing direct causality, especially because it is subject to substantial recall bias.
很多研究员都指责案例对照法不是展现因果关系直接有力的方法，尤其因为它受制于大量的记忆误差。
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。
Resting heart rate (RHR) is a risk factor for cardiovascular disease in the general population and case-control studies have reported a higher RHR in individuals with type 1 diabetes.
在普通人群中静息心率（RHR）是心血管疾病的危险度因子，病例对照研究显示1型糖尿病患者的RHR偏高。
But it appears that some of these early investigations may have been biased by the use of "case-control" studies.
最新研究显示这些早期的研究由于用到病例对照研究，结果已经有偏倚。
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。
Objective To introduce the approaches for estimating gene-environment interaction based on partial case-control studies.
目的介绍不完全病例对照研究中基因与环境交互作用的估计方法。
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。
This isn't a conclusion based simply on some cohort or case-control studies. There are many, many randomized controlled trials.
这一结论不只是基于一些世代研究或病例对照研究，而是基于无数随机对照试验。
Objective To introduce the application of Multifactor Dimensionality Reduction (MDR) method for detecting gene-gene interactions in genetic case-control studies.
目的介绍在遗传流行病学病例对照研究中，应用多因子降维法（MDR）分析基因-基因交互作用。
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。
Of the available studies, 29 were cohort studies, 69 case-control studies, and 4 randomized clinical trials.
现有的研究包括29个队列研究，69个病例对照研究以及4个随机临床试验。
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。
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 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。
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