Although numerous studies have been promising, there are scant data from randomized clinical trials.
尽管许多研究都已经表明，但还缺少随机临床试验的佐证。
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。
These findings should be confirmed or refuted through larger, randomized clinical trials with longer-term follow-up.
这些结果应通过有长期随访的、更大型的随机试验来加以证实或反驳。
The best evidence comes from randomized clinical trials, which are expensive, time consuming, and not always possible.
最佳证据来自随机临床实验，这种实验耗时耗财，而其不一定都能实现。
There are, however, no prospective, randomized clinical trials establishing an optimal nonoperative treatment protocol.
但是目前尚没有前瞻性的随机临床试验来建立最佳的保守治疗方案。
The aim of this meta-analysis of randomized clinical trials is to assess the effect of rosiglitazone on the incidence of cancer.
这项对随机临床试验荟萃分析的目的是评价罗格列酮对肿瘤发生率的影响。
FDA based its approval on two randomized clinical trials of about 125 patients who had received at least one prior ITP treatment.
FDA是基于其两个随机对照临床试验的结果而认可这个药物的。病例数约为125例，患者至少事先接受过一项针对ITP的治疗。
The recommendations were based only on data from randomized clinical trials, considered the gold standard in guiding the use of drugs.
上述治疗指南仅仅基于来自随机临床试验的数据，这被认为是指导用药的黄金标准。
Optimal caloric requirements in critically ill patients are unknown owing to the lack of data from rigorous randomized clinical trials.
危重症患者的最佳热量需求尚不清楚，因为缺乏来自严谨的随机临床试验的数据。
Once randomized clinical trials are finally completed, it may turn out that chocolate does not actually produce much of a cardiac benefit after all.
一旦随机临床试验最终结束，也许结果巧克力根本不会产生很多心脏的益处。
Further multicenter randomized clinical trials of larger sample size are needed to compare the effects of SLED and CVVH on the outcomes of postsurgical acute dialysis patients.
还需要进一步的多中心、随机、大样本临床实验来对比SLED和CVVH在术后紧急透析患者预后中的影响。
This review provides a much needed meta-analytical look at all randomized and quasi-randomized clinical trials that have analyzed head-to-head comparisons of OTC artificial tears.
本篇文献回顾提供了许多分析非处方人工泪液间直接比较的随机与半随机对照之临床试验需要的统合分析观点。
Observational studies are often misleading. Once randomized clinical trials are finally completed, it may turn out that chocolate does not actually produce much of a cardiac benefit after all.
观测研究常常会误导。一旦随机临床试验最终结束，也许结果巧克力根本不会产生很多心脏的益处。
Answer: Melatonin has been shown to be effective in randomized clinical trials - the kind considered the gold standard in medicine - but it may work better for some sleep problems than others.
答：褪黑素的效果已在被视为医学金标准的随机临床试验中得到证实，但它可能对某些特定种类的睡眠问题尤其有效。
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。
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。
The incidence of complications and sub acute thrombosis at 5 years in routine clinical practice reproduces the results of prospective randomized trials.
常规临床实践5年时并发症的发生率和亚急性血栓再现了前瞻性随机试验的结果。
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。
Prospective data on clinical outcomes from randomized trials according to sentinel-node involvement have been lacking.
但一直缺乏关于前哨淋巴结转移随机临床试验的前瞻性数据。
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。
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。
Kinds of randomized designs are often used in clinical trials.
在临床试验中各种各样的随机化设计有着广泛的应用。
It may be argued that the number of clinical randomized trials and included patients for examining restricted intravenous fluid therapy are too few to alter current practice.
限制静脉液体输入疗法或许存在争议，一些随机对比临床实验，包括对病人的检查还太少，不能变更当前的实践。
Randomized, there are placebo-controlled, double-blind, multi-center clinical trials to prove efficacy is a reliable method.
随机分组、有安慰剂对照、双盲、多中心的临床试验，才是证明疗效的可靠方法。
Randomized, there are placebo-controlled, double-blind, multi-center clinical trials to prove efficacy is a reliable method.
随机分组、有安慰剂对照、双盲、多中心的临床试验，才是证明疗效的可靠方法。
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