Clin Should Elbow.  2013 Jun;16(1):58-62.

Randomization, What is the Proper Method?

• Hong JH
• Yoo JC

Abstract

PURPOSE
Among the numerous clinical researches and following articles, there are few cases that apply proper methodology, which guarantees high reliability. By understanding the right concept and randomization of proper methods, research bias could be minimized.
MATERIALS AND METHODS
By reviewing the recently published articles about randomization, the basic concept and the necessity of applying the technique was described. Then proper methodologies for good randomization such as simple randomization, permuted-block randomization, and stratification were briefly introduced with examples.
RESULTS
AND CONCLUSION: Randomization lowers the possibility of bias and leads to higher reliability in clinical research. To obtain more reliable research results, understanding the right concept and proposition of proper methodologies of randomization is essential for researchers.

MeSH Terms

Bias (Epidemiology)
Random Allocation
Selection Bias