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。
Neural tube defects; Case control study; Risk factors.
神经管畸形；病例对照研究；危险因素。
Methods a community based case control study was designed.
方法以社区为基础的病例对照研究。
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。
Methods Case control study and self-control study in Chinese herbal treatment group were conducted.
方法采用病例对照研究和中药治疗组自身前后对照研究。
Objective Discussing sample size estimation method and effect factors for case control family design.
目的探讨病例对照家系设计中样本含量的估算方法及影响因素。
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。
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。
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。
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。
It is considered an important test case by both advocates and opponents of gun control.
这在枪支管制的支持者和反对者双方看来都是一个重要的判例案件。
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。
This type of study design, known as "case-control," cannot prove cause-and-effect.
这种类型的研究被称为病例对照研究，它不能够证明两者之间的因果关系。
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。
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。
Methods 1: m matched case-control study was conducted.
方法采取1：M匹配的病例对照研究。
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