我们不是只做了一组临床试验，我们有两组以供对比。
否则，统计学家表示只有进行严格的临床试验，对比一个控制组、一个测试组以及一个变量，才能真正证明因果关系。
Otherwise, statisticians say only strict clinical trials with a control group and a test group and one variable can truly prove a cause-and-effect association.
“通过擦洗去掉粉刺的做法是不对的，”哈佛大学皮肤病临床试验研究组主任皮肤病学者亚里克斯•波尔•金博表示。
“The concept that you can wash away your acne is not based on true fact,” said dermatologist Alexa Boer Kimball, director of Harvard University's Clinical Unit for Research Trials in Skin.
这种可能引起安慰剂效应的“无效治疗”经常被作为对照组应用于临床试验，科学家依此判断被测药物的额外作用。
Dummy treatments that might elicit the placebo effect are often used in clinical trials as a comparison group to allow scientists to measure the additional effects of experimental medicines.
WHO注册网络中七个注册中心的管理员组成临床试验注册最佳实践工作组。
Administrators of seven registries in the WHO Registry Network make up the Working Group on Best Practice for Clinical Trials Registers.
每个对照组的资源和临床状况信息来自临床试验数据库。
Information on the resources used and on clinical events in each trial arm was derived from trial databases.
有两组临床试验对此进行了研究。
另外的一些人希望更多了解自己：一个团体叫DIYgenomics团结一致了分析他们的染色体组，甚至进行和参与小临床试验。
Others hope to learn more about themselves: a group called DIYgenomics has banded together to analyse their genomes, and even conduct and participate in small clinical trials.
专家组的决定立足于一项历时5年，随访时间为12个月，包含149例肥胖患者的无对照非随机临床试验。
The Panel's decision was based on 12-month data from a 5-year, single-arm, non-randomized trial involving 149 obese individuals.
他补充说，为了获得关于睡眠呼吸暂停和青光眼间联系的确定答案，需要做大量的有年龄和体重一致对照组的临床试验。
Larger clinical trials with age - and weight-matched controls are required to obtain a definitive answer about the association between sleep apnea and glaucoma, he added.
还需要在不同亚组的ICU患者中进行临床试验以确定特殊维生素和矿物质的生化和临床最佳剂量。
Trials are also needed among subgroups of ICU patients to define biochemically and clinically optimal doses of specific vitamins and minerals.
药物基因组学：预示了充满希望的未来以及回顾性的临床试验设计，FDA可能会为实现管理型决策的目的而批准后者。
Pharmacogenomics: Delivering on the Promise considers prospective versus retrospective clinical trial design and when, if ever, the FDA might allow the latter for regulatory decision-making purposes.
PIVENS项目是迄今为止采用以安慰剂为对照组，对NASH的疗法进行研究的，最大的随机临床试验。
PIVENS is the largest placebo-controlled, randomized clinical trial of therapies ever conducted for NASH.
结论：对于以建立治疗-对照差临床意义或临床等效性为目的的分层两组临床试验，可用该检验进行分析。
Conclusion: the test can be applied to analyzing the data from the clinical trials for establishing the clinical significance of treatment-control difference or clinical equivalence.
方法采取平行组设计、分层随机、双盲、多中心临床试验方法。
Methods parallel group, stratified randomization, double blinded, muti-center clinical trail was designed.
临床试验中最常见的设计是平行组设计和交叉设计。
The most common designs in clinical trial are parallel design and cross over design.
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。
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.
这一多少有点令人惊讶的结果提示，该研究中心在临床试验过程中存在着优化IHD组结果的实践曲线。
This somewhat surprising result implies that over the course of the trial there was a learning curve for optimizing the results of IHD within the study centers.
我们纳入未报告受试者年龄、比较非处方人工泪液和其他类型的非处方人工泪液、安慰剂组或未治疗的临床试验。
We included trials in which the age of participants was not reported, and clinical trials comparing OTC artificial tears with another class of OTC artificial tears, placebo, or no treatment.
该治疗对比了限定性CRT和三合一治疗模式，从而最终确定了我们正在进行的多中心随机临床试验限定性CRT组。
This treatment represents the definitive CRT arm of our ongoing multicenter randomized trial comparing definitive CRT and trimodality treatment.
没有发现比较脊髓损伤病人，行外科脊柱固定手术和其他治疗的随机对照临床试验或其他有对照组的临床试验。
No randomised controlled trials or controlled trials were identified that compared surgical spinal fixation surgery to other treatments in patients with a traumatic SCI.
试验也可通过癌症防治网络、临床试验研究组，癌症研究的行政和科研基地是梅奥诊所。
Trials are also available through the Cancer Prevention Network, a clinical trial study group whose administrative and research base is at Mayo clinic.
目的：介绍临床试验中多处理组比较期中分析方法。
Objective:To introduce the multi-armed interim analysis methods in clinical trials.
②安全性分析：此次临床试验期间，两组均未发生不良反应和毒副作用。
There were no untoward reactions in both experimental groups and control groups in the clinical practice.
没有发现比较脊髓损伤病人，行外科脊柱固定手术和其他治疗的随机对照临床试验或其他有对照组的临床试验。
This review found no controlled trials of spinal fixation surgery for the patient group. The quality of the existing evidence is too poor to include in the review, as it is likely to be unreliable.
方法分组与治疗通过单中心、随机、空白对照临床试验方法，分为腹针组20例、空白组20例。
MethodsGrouping and treatment: through single center, stochastic, blank comparison clinical trial method, divides into the abdomen acupuncture group 20 examples, the blank group 20 examples.
方法：采用区组随机、双盲、安慰剂平行对照临床试验。
Method: This clinical research adopts randomized blocks, double-blind and placebo control.
方法：采用区组随机、双盲、安慰剂平行对照临床试验。
Method: This clinical research adopts randomized blocks, double-blind and placebo control.
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