The data on effectiveness are not perfect, which is why we’re doing a controlled study. But they are substantial.

对手术来说，产生预期郊果的数据并不完美，这也是我们正在做对照研究的原因，但手术的价值是巨大的。

youdao

A controlled study involving nearly 250 us women going through "the change" found soy tablets did not abate hot flushes or bone density loss.

一项涉及250名美国妇女经历“骨质变化”的对照研究发现，大豆片剂并没有减轻潮热或骨质密度的损失。

youdao

The aim of the present study was to compare STACE to conventional TACE in a controlled study of candidates for liver transplantation (LT) for hepatocellular carcinoma (HCC).

本研究的目的是比较常规TACE对照研究肝细胞癌（HCC）肝移植（LT）的候选人灯光音响。

youdao

In a controlled study, some patients would have taken aspirin.

VOA: special.2009.09.01

What one of the psychiatrists I spoke to said what they really need to do is show the effects in a controlled study.

CNN: O'Connor: Kids confused over safety of Ecstasy

It is a randomized controlled study, meaning that similar patients were assigned at random to either get either Centrum or placebo.

FORBES: Do Vitamins Prevent Cancer? The Answer Will Give You Whiplash

Given that the association between diet drinks and with vascular events is unexpected and unsupported by other research, a study that controlled for specific ingredients, such as the type of sweetener and caffeine content, is needed to assess whether there are grounds for a plausible mode of action.

FORBES: Will Drinking Diet Soda Increase Your Risk For A Heart Attack?