Dr. Cooper refused to participate in the trial, saying he could not in good conscience randomly assign patients to the control group who would receive no treatment.

The orthodox way to find out is to randomly assign patients to have the lung scanning test, or not, and then compare outcomes.

The rules also recommend against assigning new patients to students after 10 p.m., and they also grant holidays off.

Many records had unsigned, handwritten entries and there was no evidence that Bezwoda had randomly assigned patients.

The new one will carefully assign patients to different groups at the time of surgery to account for such important factors as pre-existing heart disease and measure long-term results.

Because senior staff there were unable to assign surgical or complex patients to her?

There is little doubt that the most powerful way to show a drug's efficacy and safety is to assign patients at random to the drug or a placebo.

Doctors might have assigned sicker patients to a particular drug that could make the results for that drug look especially bad.

Like most health maintenance organizations, the agency has assigned patients to a single primary care doctor to direct visits to specialists.

Several risk-scoring systems have been developed to assign patients to different risk categories with respect to important outcomes such as mortality or intensive care unit admission.