In the observational studies we found that some of the B vitamins were beneficial.
在观察性研究中，我们发现一些维生素B是有益的。
Observational studies are often misleading.
观测研究常常会误导。
These results are consistent with that of observational studies.
这些结果与观测研究的结果一致。
This supports the conclusions of observational studies and expert opinion.
这支持了观察性研究的结果和专家的论点。
This supports the conclusions of observational studies and expert opinion.
这支持了观察性研究的结论及专家的论点。
But these were mostly based on observational studies, which can be misleading.
不过这些结论大多都是在观察研究的基础上的，因而有可能产生误导。
Randomized and Observational Studies in Nephrology : How Strong Is the Evidence?
肾脏病的随机观察性研究：证据可靠性如何？
For some of these questions, observational studies are the best we are going to get.
因为这样的一些问题，观察性的研究是我们所拥有的最好方式。
They are artifacts of something we call immortal time bias in observational studies.
他们是我们在观察性研究中称作恒定时间偏倚的人工制品。
All of the studies identified were retrospective observational studies and of poor quality.
所有找到的研究都是回顾性的观察研究，且品质不良。
Most importantly, observational studies cannot distinguish indicators of risk from causal factors.
最为重要的是观察性研究无法区分风险指标和偶然因素。
She points to growing evidence from observational studies suggesting that early use cuts heart risk.
她指出越来越多的观察研究的证据表明早期采取激素替代疗法会降低心脏风险。
The results were consistent across experimental laboratory studies and correlational observational studies.
该结果与实验室研究和相关观察研究一致。
In the decades that followed, dozens of observational studies reported that breakfast eaters tended to be leaner.
在随后的几十年里，数十项观察性研究报告指出，吃早餐的人往往更瘦。
In the decades that followed, dozens of observational studies reported that breakfast eaters tended to be leaner.
在随后的几十年里，多项观察研究报告指出，吃早餐的人一般会更瘦一点。
In many past observational studies, however, basic genetics or environmental factors could be blamed for this association.
但在以前的许多研究报告中，人们认为基因或环境因素是导致这种联系的元凶。
There are multiple possible reasons for discrepant results between observational studies and large randomized trials.
导致观察性研究和大规模随机临床试验结果之间不一致的可能原因有多种。
Context Regular intake of cocoa-containing foods is linked to lower cardiovascular mortality in observational studies.
在一些观察研究中发现，经常食入含可可粉的食物和很低的心血管（病）死亡率有联系。
Much of the evidence for coffee's health benefits stems from observational studies, which cannot prove cause and effect.
咖啡健康益处的很多证据来自观察性研究，不能证明因果关系。
Conclusions: Selenium concentrations were inversely associated with coronary heart disease risk in observational studies.
结论：观察性研究中硒浓度与冠心病危险度呈负相关。
Previous work by Dr Ioannidis, on six highly cited observational studies, showed that conclusions from five of them were later refuted.
阿尼得士医生有6个受到高度引用的前期研究中，5个推论随后都被驳倒。
Multiple observational studies have shown that moderate alcohol consumption is associated with lower rates of cardiovascular events.
多重观察研究表明，适度饮酒能够降低患心血管疾病的几率。
Goldstein noted that data from observational studies have suggested that low cholesterol levels raise the risk of brain hemorrhage.
Goldstein医生注意到这些来自观测研究的数据显示：低胆固醇水平能增加脑出血的风险。
Objective to demonstrate, by case study, how to analyze the hospital data through the statistical methods in observational studies.
目的通过个案分析，说明如何采用观察性研究的方法对医院资料进行统计分析。
A debate over that question in a British scientific journal shows why some observational studies should be taken with a big shaker of salt.
英国一家科学期刊就这个问题展开了一场争论，从中我们可以看出某些观察性研究的结果不可轻信。
There were also hints that aspirin may help prevent some cancers. But these were mostly based on observational studies, which can be misleading.
也有消息称阿司匹林还可预防某些癌症，但大多都是基于观测研究得来的，不可全信。
Observational studies suggest that conventional right ventricular apical pacing may have a deleterious effect on left ventricular function.
观察研究表明传统的右室心尖部起搏对左室功能可能有不利影响。
Observational studies such as cohort studies, cased-control studies, and historical controlled studies will be used for sensitivity analysis.
同时一些观察性研究，如队列研究、病例对照研究和历史对照研究等纳入用于敏感性分析。
Even carefully constructed observational studies that correct for such variables can only find correlations, not prove a cause-and-effect relationship.
即便是那些精心设计、对这些变量已作调整的观察性研究也只能发现其中的相关性，而无法证实一种因果关系。
Even carefully constructed observational studies that correct for such variables can only find correlations, not prove a cause-and-effect relationship.
即便是那些精心设计、对这些变量已作调整的观察性研究也只能发现其中的相关性，而无法证实一种因果关系。
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