Gastrointestinal and surgical specialties: challenges in clinical research
Background: The quality of a clinical research can be improved, and it´s results can become of a greater value, by exploring the advantages of the randomized controlled trial. This method has become widely explored in research trials given the concept that it is the only valid method that can ensure the results when comparing treatments. In some areas of knowledge, the use of only randomized controlled trial methods can present obstacles. Such studies must be approached with other tools to avoid doubtful bias and outcomes.