Sample size calculation in scientific research.

Abstract

This article provides an overview of common approaches and factors that affect sample size determination in various study designs, including experimental, observational, qualitative, and survey studies. The methodology used to determine sample size is discussed, along with the challenges, limitations, and importance of reporting sample size determination in research studies and provides guidelines for doing so. The article concludes with the need for researchers to carefully consider sample size determination when designing studies to ensure valid and reliable results. The article provides a useful resource for researchers and practitioners involved in study design and implementation.