12/10/2023 0 Comments Random numerical data generator toolHowever, some very important confounding variables can often be assigned unequally to the two groups. Randomization is important because it is almost the only way to assign all the other variables equally except for the factor (A and B) in which we are interested. So, we will introduce the recommended way of using statistical methods for a randomized controlled study and show how to report the results properly. On the other hand, many researchers are still unfamiliar with how to do randomization, and it has been shown that there are problems in many studies with the accurate performance of the randomization and that some studies are reporting incorrect results. Randomization, allocation concealment and blinding should be well implemented and should be described in the paper. Blinding is not always feasible for RCT but should be implemented if possible. This process is conducted to minimize possible bias in implementation, dropouts, measurements, etc. This process must be included in the experiment for the success of any RCT.īlinding refers to keeping trial participants, health care providers, assessors or data collectors unaware of the assigned intervention, so that they will not be influenced by that knowledge. Allocation concealment prevents researchers from influencing which participants are assigned to a given intervention group. This allows researchers to control all known and unknown factors that may affect results in treatment groups and control groups.Īllocation concealment is a technique used to prevent selection bias by concealing the allocation sequence from those assigning participants to intervention groups, until the moment of assignment. Random allocation is a technique that chooses individuals for treatment groups and control groups entirely by chance with no regard to the will of researchers or patients' condition and preference. Randomized controlled trials (RCT) are known as the best method to prove causality in spite of various limitations.
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