| Randomization, What is the Proper Method? |
| Jin Ho Hong, Jae Chul Yoo |
| Shoulder & Sports medicine, Department of Orthopedic Surgery, Samsung Medical Center, Korea. shoulderyoo@gmail.com |
| Randomization, 방법은 무엇인가? |
| 홍진호·유재철 |
| 성균관대학교 의과대학 정형외과학교실 |
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| 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. |
| Key Words:
Randomization; Random number; Selection bias; Stratification |
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