Methods: The prospective randomized control trial is used.

方法：采用前瞻性的随机对照研究。

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Design: a completely randomized grouping design and randomized control trial.

设计：随机分组设计、对照实验。

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We went on to apply this finding to two randomized control trial cohorts and found that this was indeed the case.

我们把这个研究结果运用到了两个随机对照试验队列中并发现确实如此。

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In the double-blind, randomized control trial, half the women got tenofovir gel and half got a placebo.

CNN: Gel cuts HIV transmission rate in study

The investigators are now conducting a randomized, controlled clinical trial of RAGE Control in the outpatient clinic at Boston Children's that adds a cooperative component.

ENGADGET: Researchers create video game that monitors heart rate to keep children's anger in check

The gold standard for testing medical treatments is the randomized trial, in which patients are randomly assigned to a treatment or control group to spread patient differences evenly and avoid bias in results.

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