Clinical trials take a long time because they're rigorously controlled, with close attention paid to sampling bias and methodology.
临床试验需要花费很长时间，因为它们处于严格控制之下，必须密切留意取样偏差与方法。
Much of the research on alcohol's benefit comes from studies that observe people over time rather than from controlled clinical trials, which are more reliable.
认为酒精有益的许多研究结果都是从长期观察的测试者身上得来，并不是随机临床试验的方式，相比起来后者更为可信。
Take, for example, those 19 million studies on PubMed.Some are gold-standard research: large, randomized, controlled clinical trials or meta-analyses that carefully parse millions of data points.
就拿PubMed上的1900万份研究论文来说，一小部分堪称一流：大型，随机，受控的临床试验和结果的荟萃分析与论文提供的数据相当吻合。
Take, for example, those 19 million studies on PubMed. Some are gold-standard research: large, randomized, controlled clinical trials or meta-analyses that carefully parse millions of data points.
就拿PubMed上的1900万份研究论文来说，一小部分堪称一流：大型，随机，受控的临床试验和结果的荟萃分析与论文提供的数据相当吻合。
The FDA based its decision on a meta-analysis of controlled clinical trials involving 11 antiepileptic drugs used for a variety of indications, including bipolar disorder and pain.
FDA是在对11种抗癫痫类药物的受控临床实验进行的元分析基础之上作出此项决定的，这11种药物用于治疗包括双相障碍(bipolar disorder)和身体疼痛在内的多种适应症。
This is because there is little published evidence from controlled clinical trials to show most anti-aging products have any benefit.
这是因为临床试验被管制，大多数的抗老化产品是否有益就很少得到公开证实。
Two randomized controlled trials (RCTs), one before-and-after study and two retrospective reports on clinical efficacy and safety were retrieved, together with 18 pharmacokinetic studies.
检索到与临床功效和安全性相关的两个随机对照试验(rct)、一个前后对照研究、两个回顾性报告，以及18个药物动力学研究。
Controlled clinical trials can evaluate the intervention or the herbal product, but not the full experience.
对照临床试验可以评价干预措施或草药产品，但不能评价全面的体验。
Jadad and his team outlined their views of the effectiveness of blinding on published studies in a 1996 paper in the Journal of Controlled Clinical Trials.
Jadad和他的组员在1996年的《临床对照试验杂志》上发表了一篇有关盲法效应的文章。
However, , they added this effect has not yet been demonstrated in carefully-controlled clinical trials.
但是，目前这项研究还没有在严格控制的临床试验中被证实。 %。
Most devastatingly, however, there are no randomized, double-blinded placebo controlled clinical trials that compare the success of quitting smoking by using smokeless tobacco versus using a placebo.
然而，极具讽刺的是，通过使用无烟烟草戒烟与使用安慰对照组相比，临床对照控制组没有进行随机的双盲试验。
The researchers limited their analysis to randomized controlled trials, which are the gold standard of clinical research, to ensure that only the highest quality data were used.
研究人员有选择的分析了随机对照临床试验(临床研究的金标准)，以确保只采用最高质量的数据。
They point out that few well-designed studies, following the gold standard of randomized controlled clinical trials, have demonstrated efficacy over placebos.
他们指出，根据随机对照临床试验的黄金标准精心设计的研究很少显示出比安慰剂更好的功效。
Systematic reviews, randomized controlled clinical trials and clinical guideline have becoming the most important clinical research methods for evidence based medicine.
系统评估方法、临床随机对照研究方式和临床指南的方式，正成为循证医学的最重要的临床研究方法。
In 1979 and 1985, however, other researchers reported no benefit for cancer patients taking high oral doses of vitamin C in two double-blind, placebo-controlled clinical trials.
但是，在1979年和1985年，两项双盲安慰剂对照临床实验的研究者报道说肿瘤患者口服高剂量的维生素C没有收到治疗作用。
An initial license is granted at an earlier stage than possible under the traditional system, with less clinical information from Randomized Controlled Trials (RCTs).
最初的授证，是比传统系统更早的阶段受到认可，随机对照试验(rct)的临床信息的必要量，也比以前少。
The results of this prospectively controlled experimental study are encouraging for further clinical trials.
目前的应用结果鼓舞我们进一步的临床实验应用。
The new therapy was tested in placebo-controlled clinical trials and improved Alzheimer patients' memory, ability to do everyday things and overall functioning.
安慰剂对照临床试验结果表明，阿尔茨海默病患者的记忆力、处理日常事务能力及整体功能改善，验证了这一新疗法。
Ideally, there is continuous interaction between clinical reality and the methods of controlled clinical trials.
临床真实性与临床对照试验的方法相互影响的持续存在是很理想的。
Methods All original articles on clinical drug therapeutic concurrent controlled trials published in 18 Chinese Medical Series Journals from 1996 to 1998 were selected as objects of surveying.
方法选取18种中华医学系列期刊，1996 ~ 1998年刊载的临床药物防治性同期对照研究论著为调查对象。
These patients had acne vulgaris ranging from mild to severe and were a subgroup of patients from phase 3, randomized, double-blind, vehicle-controlled, multicenter clinical trials.
这些患者有轻到重度痤疮，是基质对照随机双盲多中心3期临床试验的一个亚组。
The long-term safety and efficacy of CNI withdrawal and avoidance strategies need to be further validated in controlled clinical trials.
CNI病理性退隐或者CNI避免策略，它的长期的的安全与有效，需要更多的临床试验来验证。
The double-blind, placebo-controlled, phase III study is one of the largest PD clinical trials to date.
双盲，安慰剂对照，第三阶段的研究是其中一个最大的钯临床试验的最新资料。
They explained how clinical trials are very controlled. They dispelled some of the fears and rumors I had about joining a trial.
他们向我解释了临床试验的安全度，也消除了一些我对参加实验的恐惧和谣言。
There are no controlled clinical trials demonstrate clinical benefit, such as improvement of survival rate.
尚无临床对照试验证明其临床利益，如对存活率的改善。
To date, randomized, controlled clinical trials have not reproduced the efficacy observed in pre-clinical and small-scale clinical investigations.
在随机对照临床试验中并没有重现小规模临床前的调查中观察到的疗效。
In recent years, a series of randomized controlled clinical trials on rescue angioplasty in patients with acute myocardial infarction were completed.
近年来，国外已完成了一系列有关的随机对照临床试验，比较客观的评估了急性心肌梗死补救性介入治疗的效果。
In recent years, a series of randomized controlled clinical trials on rescue angioplasty in patients with acute myocardial infarction were completed.
近年来，国外已完成了一系列有关的随机对照临床试验，比较客观的评估了急性心肌梗死补救性介入治疗的效果。
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