There have been 258 placebo-controlled clinical trials of vaccines, according to a new research project. More than half of ...

For the five clinical topics and 99 reports evaluated, the average results of the observational studies were remarkably similar to those of the randomized, controlled trials. For example ...

The study designs described previously in ... the two groups because of the method of recording used. For example, where the control group is assigned to one practitioner and the intervention ...

This protocol considers the appropriate design of both CG and GWA studies in terms of case and control definition, and determining minimum sample size to achieve adequate power. Marker selection ...

But isn't there hard evidence from research studies that show that gun control regulations work to ... extensive research into the subject. As one example of this, Donohue pointed out how Texas ...

Nearly 300,000 lives could be saved from the nation’s wave of gun violence over the next decade if every US state enacted gun control laws ... according to a new study announced Friday ...

No controlled studies support claims that ... nutrition experts raised concerns about the study’s health claims. For example, the study did not include any way to check the accuracy of the ...