Study Design. This study was a prospective, randomized, controlled study.

研究设计：本研究为随机，对照，前瞻性研究。

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DESIGN: a non randomized controlled study was conducted.

设计非随机对照研究。

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DESIGN: Randomized controlled study and analysis of variance.

设计：随机对照的实验，方差分析。

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The Symplicity HTN-2 trial is an international, multi-center, prospective, randomized, controlled study of renal denervation in patients with treatment-resistant hypertension.

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But there has been only one randomized controlled trial studying the effectiveness of taking foods out of so-called elimination diets, Chafen's study said.

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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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