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SAGE Publications, Indian Journal of Psychological Medicine, 2(35), p. 121-126, 2013

DOI: 10.4103/0253-7176.116232

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How to calculate sample size for different study designs in medical research?

Journal article published in 2013 by Jaykaran Charan ORCID, Tamoghna Biswas
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Calculation of exact sample size is an important part of research design. It is very important to understand that different study design need different method of sample size calculation and one formula cannot be used in all designs. In this short review we tried to educate researcher regarding various method of sample size calculation available for different study designs. In this review sample size calculation for most frequently used study designs are mentioned. For genetic and microbiological studies readers are requested to read other sources.