Author/Authors :
Rateb, Said Egyptian Group for Surgical Science and Research, Egypt , Dowidar, Nabil Egyptian Group for Surgical Science and Research, Egypt , Farid, Mohamed Egyptian Group for Surgical Science and Research, Egypt , Hussein, Ahmed Egyptian Group for Surgical Science and Research, Egypt , Hazem, Ahmed Egyptian Group for Surgical Science and Research, Egypt
Abstract :
In the pyramid of research design, the results of a randomized controlled trial is considered the highest level of evidence. Randomization is the only method which can control known and unknown factors that can influence the results of surgical research on treatment effect. Nonrandomized studies, or observational studies, are known to overestimate or underestimate treatment effects. Theses considerations have supported the top position for randomized controlled studies in the evaluation of treatment effect. This article aims at helping surgeons decide, before implementing a new intervention, that the results presented in a randomized controlled trial supporting the use of a particular intervention are valid and important
