The answer is the "gold standard" double blind, placebo controlled study.
答案是“金标准”，双盲，安慰剂对照研究。
So, in fact, this double blind placebo controlled study does not guarantee safety or efficacy because the test leaves far too many questions unanswered.
所以实际上，双盲对照研究并不会保证疗效和安全，因为它留下太多无法回答的问题。
DESIGN: Randomized and double blind observation.
设计：随机双盲法观察。
Methods: Randomized double blind study was employed.
方法：随机双盲对照临床研究。
Methods The random and double blind method was used.
方法采用随机双盲方法。
DESIGN: Randomly double blind and control experiment.
设计：随机双盲对照实验。
Methods:this was a randomized, double blind controlled trial.
方法：采用随机双盲对照研究。
METHODS: Randomized double blind control clinical trial was used.
方法：随机双盲双模拟对照研究。
Methods A random, double blind, and placebo control study was conducted.
方法采用随机双盲、安慰剂平行对照研究。
DESIGN: a completely randomized, double blind controlled trial was conducted.
设计：完全随机双盲实验对照研究。
METHODS: The parallel double blind randomized control clinical trial was used.
方法：采用平行双盲随机对照研究。
Methods: Random, double blind and double central prospective study was adopted.
方法：采用随机、双盲、双中心前瞻性研究。
METHODS: It was a randomized, double blind, double model, parallel controlled clinical trial.
方法：采用随机、双盲双模拟、平行对照方法。
Studies on phase I clinical trials of artesunate tablet were carried out with double blind method in 22 male healthy volunteers.
以双盲法对22名健康男性志愿者进行青蒿琥酯片口服的耐受性和不良反应研究。
Objective: To compare the clinical applications of domestic enflurane and imported enflurane by randomly double blind controlled method.
目的：采用大样本随机双盲对照方法对国产和进口安氟醚临床应用进行比较。
AIM: to observe the effect of melatonin in treating elderly patients with primary insomnia by using the objective evaluating method of double blind placebo control.
目的：应用双盲安慰剂对照的客观评估方法观察褪黑素对老年原发性失眠患者的治疗作用。
Double blind was used in the experiment.
整个实验采用双盲法。
Double blind test was used in whole experiment.
整个实验采用双盲法。
Double blind controlled trials have shown thatCoQ10 improves symptoms, functional capacity and quality of life in patients with heart failure with no side effects.
双盲控制试验表明辅酶Q10改善心衰患者症状，功能及生活质量且没有副作用。
The review included only double-blind randomised controlled trials, which are the best type of study for finding out the effects of a treatment.
这份研究只包含了双盲随机控制实验，这是找寻治疗效果最好的研究方式。
In a double-blind trial, there were some improvements.
在一个双盲测试中，有了一些进步。
A spokesman added: 'The claim was supported by well-designed, double-blind, placebo-controlled human studies.
一位发言人补充道：“这个断言得到严格设计、双盲和安慰剂对照人体研究的支持。”
The approval was based on data from 2 prospective, randomized, double-blind placebo-controlled clinical studies.
这次批准的依据是2次前瞻性随机双盲安慰剂控制对照临床研究的数据。
What's more, it's impossible to hide the fact that people are receiving Botox, he adds – and that would invalidate the double-blind nature of the experiment.
此外，他还补充道，谁在注射肉毒杆菌素这一事实是无法掩盖的，这会使试验失去双盲性。
Initial trials of PLX4032 suggest it may be as good as, or even better than, ipilimumab at improving sufferers' survival. A full-scale, double-blind trial is now under way.
最初的PLX4032的试验证明它在延长患者生命方面同ipilimumab一样好，甚至比ipilimumab更好，全规模的双盲试验目前正在进行中。
New hope for hundreds of thousands of people suffering from chronic sciatica was revealed this week in a Phase II randomized, double-blind, placebo-controlled trial.
本周在一项II期随机、双盲、安慰剂对照试验中揭晓了几十万慢性坐骨神经痛患者的治疗新希望。
All manuscripts will go through a strict double-blind review process.
所有稿件均需经过严格的双盲评审。
Methods: Prospective, double-blind control study.
方法：前瞻性、双盲对照研究。
Methods: Prospective, double-blind control study.
方法：前瞻性、双盲对照研究。
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