But the company must then do a larger, controlled trial to show that the drug actually prolongs lives.

Controlled clinical trials are necessary to assess the value of this therapy.

Millennium has been conducting a larger, controlled trial with about 670 patients to confirm the drug's effectiveness.

There are no prospective placebo controlled trials of preventive treatment.

Effect of soybean protein on blood pressure: A randomized, controlled trial.

Most countries had signed the agreement to control trials of new genetically modified foods strictly.

Controlled clinical trials showed that levamlodipine is rarely associated with these side effects.

Web-based weight management programs in an integrated health care setting: A randomized, controlled trial.

A randomised double blind placebo controlled trial of fish oil in high risk pregnancy.

Results of a prospective placebo controlled double blind trial.

A number of control trials, in which the central target was followed by a blank screen, were included in the random sequence.

To firmly assess these claims, large randomized control trials are required.

Physicians have to face that problem every day because there are far too few randomized control trials of alternate therapies.

Randomised control trials have shown that beta2-agonists increase muscle strength but do not modify disease progression.

It documents their 15 years of experience in conducting randomized control trials to alleviate poverty.

The debate centered around the question of which was more important, a handful of individual cases or a large randomized control trial.

A randomized control trial of these procedures has not been done as of 2011.

Similarly with the results of one randomized control trial which reported some evidence that cognitive behavioral therapy may be beneficial.

Vascular events in healthy older women receiving calcium supplementation: randomised control trial.

However, due to small sample size and lack of randomized control trial, the result is not conclusive.