Study Design. A randomized controlled trial.

研究设计：随机对照试验。

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METHODS: a randomized controlled trial was adopted.

方法：采用随机对照试验。

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A randomized controlled trial of preventive antibiotics used for esophageal operations.

食管手术预防性抗生素使用的随机对照研究。

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The treatment was common until a randomized controlled trial proved it was actually harming women.

FORBES

The Cambridge group will begin a randomized controlled trial next month with 104 children involved, similar to the peanut study done already, but with controls, said researcher Dr. Andrew Clark of Cambridge University Hospitals.

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But the RAND study side-stepped these problems by using the gold standard of scientific evidence a randomized controlled trial, just like those that the FDA relies on to provide definitive scientific evidence regarding the efficacy and safety of pharmaceuticals.

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