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。
DESIGN: a randomized grouping comparison and placebo controlled study.
设计：随机对比观察，安慰剂对照。
The study was a double blind placebo controlled study adequately powered for OS as primary end-point.
这项研究是一项双盲，安慰剂对照的研究，以OS作为主要终止点。
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。
METHODS: We conducted a multicenter, randomized, double - blind, parallel - treatment, placebo - controlled study in Japan.
方法：在日本进行一项多中心随机双盲对比治疗的安慰剂对照研究。
Efficacy and Safety of Prophylactic Large Dose of Tranexamic Acid in Spine Surgery: a Prospective, Randomized, Double-Blind, Placebo-Controlled Study.
预防性大剂量氨甲环酸在脊柱外科中的疗效和安全性：一个前瞻性，随机，双盲，安慰剂对照的研究。
METHODS: We conducted a multicenter, randomized, double-blind, parallel-treatment, placebo-controlled study in Japan.
方法：在日本进行一项多中心随机双盲对比治疗的安慰剂对照研究。
The double-blind, randomized, placebo-controlled study included 24 patients ages 48 to 84.
该双盲随机严格对照试验纳入了24名48到84岁的患者。
In this randomized, double-blind, placebo-controlled study, we examined 20 healthy volunteers who ingested 12 mg AXT or placebo capsules over a 4-week period.
在这项随机，双盲，安慰剂对照研究中，我们研究了20名健康志愿者超过4周期间摄入12毫克的或安慰剂胶囊。
Leflunomide was evaluated in a randomized, double-blind, placebo-controlled study in active ankylosing spondylitis but was not found to be effective.
来氟米特通过随机双盲安慰剂对照试验研究表明，对强直性脊柱炎急性期没有效果。
Methods: a multicenter, randomized, double blind, and placebo controlled clinical study was performed.
方法本次为一中心，随机，双盲，安慰剂对照临床观察。
The Myoblast Autologous Grafting in Ischemic Cardiomyopathy (MAGIC) trial: first randomized placebo-controlled study of myoblast transplantation.
肌病（MAGIC）试验：成肌细胞移植的第一个安慰剂-对照试验。
RESEARCH DESIGN AND METHODS The Hyperbaric Oxygen Therapy in Diabetics with Chronic Foot Ulcers (HODFU) study was a randomized, single-center, double-blinded, placebo-controlled clinical trial.
研究设计和方法对于患有慢性足部溃疡的糖尿病患者，超高压氧气疗法（HODFU）研究采用了随机分组、单中心、双盲、安慰剂对照的临床试验。
Methods The study was strictly designed with randomization, double blinding, and placebo controlled method to observe the efficacy and immune memory 11 years following hepatitis B vaccination.
方法按随机、双盲、安慰剂对照严格设计，对乙型肝炎疫苗接种11年后效果及免疫记忆进行观察。
The double-blind, placebo-controlled study on 80 contact dermatitis patients will take place at the Hadassah Hospital in Israel.
双盲，安慰剂控制在80接触性皮炎患者的研究将在以色列哈达萨医院进行。
MATERIALS and METHODS: This was a randomized, double-blind, placebo controlled, parallel group, multicenter study.
材料和方法：这是一项随机、对照、双盲、平行分组、多中心的研究。
In an additional placebo controlled double-blind study the efficacy of Hirudoid cream was assessed in treating superficial thrombophlebitis developing after continuous infusion (Metha et al.).
另外一项安慰剂对照的双盲研究，评估了喜疗妥软膏治疗由于持续注射而引起的浅表血栓性静脉炎的疗效(Metha等人)。
"This study provides the basis for larger and placebo-controlled clinical studies aiming to prove the efficacy of this novel biologic treatment strategy," the investigators concluded.
研究者总结指出：该研究为开展更大规模的安慰剂对照临床试验，证实这一生物治疗新策略的有效性奠定了基础。
The data are from an extension study of a randomized, double-blind, placebo-controlled trial.
这些数据来自一个随机、双盲、安慰剂对照试验、根据研究。
This study now demonstrates such an effect for a selective COX-2 inhibitor in a placebo-controlled randomized study.
现在的这项研究证实了在安慰剂作为对照的随机实验中，一种选择性COX - 2抑制剂也有这种效应。
This study now demonstrates such an effect for a selective COX-2 inhibitor in a placebo-controlled randomized study.
现在的这项研究证实了在安慰剂作为对照的随机实验中，一种选择性COX - 2抑制剂也有这种效应。
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