他们原先认为，这些类型的设备应该也将会在适当的时间框架内接受随机、双盲对照研究，对其安全性和有效性进行调查。
They had assumed that these types of devices should and would be subject to random double-blinded studies with controls over an appropriate time-frame to investigate safety and efficacy.
证明药理和药效的最好方法之一就是进行随机临床对照试验，在这个试验中其研究对象会被随机地分成两组。
One of the best ways scientists have to prove cause and effect in medicine is to conduct a randomized controlled trial, in which study subjects are randomly assigned to two groups.
对比较在家里或在诊所进行药物流产的随机对照试验和前瞻性群组研究进行系统搜索。
A systematic search for randomized controlled trials and prospective cohort studies comparing home-based and clinic-based medical abortion was conducted.
“选择刚好心脏病发作的患者，”哈提卜博士说。“两组随机的受控对照研究表明，除颤器不能为刚好心脏病发作的患者带来好处。”
“Take patients who just had a heart attack,” Dr. Khatib said. “Two randomized controlled studies show that defibrillators do not benefit patients who just had a heart attack.
两组随机的受控对照研究表明，除颤器不能为刚好心脏病发作的患者带来好处。
Two randomized controlled studies show that defibrillators do not benefit patients who just had a heart attack.
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。
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.
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。
The approval was based on data from 2 prospective, randomized, double-blind placebo-controlled clinical studies.
资料来源于62项研究，包括随机对照试验和上市后研究。
Data from 62 studies, including randomized controlled trials and post-marketing studies, were included in the review.
过去的24个病例数据表明酮类在此方面的疗效，并且更重要的是，两个随机的有对照的研究在2008年发表。
There are about two dozen backward-looking analyses of patient data suggesting keto works, and, more significant, two randomized, controlled studies published in 2008.
USPSTF评论说自从2002年作过回顾综述以后，尚没有已完成的高质量的前列腺癌方面的随机对照研究。
The USPSTF comments that since its last review in 2002, no good-quality randomized controlled trials of screening for prostate cancer have been completed.
食管手术预防性抗生素使用的随机对照研究。
A randomized controlled trial of preventive antibiotics used for esophageal operations.
研究设计：前瞻性随机对照研究。
他们对18 -55岁中重度腰背部疼痛的患者进行了一项随机对照研究。
They conducted a randomized controlled trial of 18-55 year olds with moderately severe low back.
前瞻性的随机对照研究。
研究设计：随机对照研究； 循证医学级别，1级。
Study Design: Randomized, controlled trial; Level of evidence, 1.
据我们所知，这两种方法还没有进行过前瞻性随机对照研究。
To our knowledge, no prospective randomized trial has compared the two techniques.
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。
Systematic reviews, randomized controlled clinical trials and clinical guideline have becoming the most important clinical research methods for evidence based medicine.
李可建。对脑心通胶囊治疗缺血性中风急性期随机对照研究的系统评价。
Li KJ. Naoxin capsule for acute stroke: a systematic review of randomized controlled trials.
一个大型长达10年随机对照研究TARGIT- A研究发现治疗乳腺癌的一种短而简单的新放射疗法具有推广应用的潜在价值。
A large, 10-year, randomized clinical trial - called TARGIT-A - has revealed promising results for the broadening use of a shorter and easier radiation therapy method for patients with breast cancer.
设计：以患者为研究对象，以诊断为依据的随机对照研究。单位：一所大学医院的综合科、康复室及超声波室联合进行的课题研究。
DESIGN: Randomized case control study to patients based on diagnosis SETTING: department of general diseases, rehabilitation room and ultrasound department of a university hospital.
方法：采用平行双盲随机对照研究。
METHODS: The parallel double blind randomized control clinical trial was used.
然而，没有随机对照研究评估生活方式治疗设备对腰背痛发病率的影响。
Nevertheless, no randomized controlled trial has assessed effectiveness of lifestyle intervention for the treatment of hypertension on the prevalence of low back pain.
方法：我们对320名因患有急性ST段抬高型心肌梗塞而接受SES或BMS治疗的病人进行了随机对照研究。
Methods: We conducted a randomized trial of 320 patients with acute ST-segment elevation myocardial infarction assigned to receive SES or BMS.
在这项多中心的随机(对照)研究中，我们对胰头癌患者术前胆道引流与直接手术进行了比较。
In this multicenter, randomized trial, we compared preoperative biliary drainage with surgery alone for patients with cancer of the pancreatic head.
设计：随机对照研究。
设计：随机对照研究。
方法：采用前瞻性的随机对照研究。
设计：随机对照研究。
设计：完全随机对照研究。
设计：完全随机对照研究。
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