Abstract
The most important question that a researcher should ask when planning a study is: ‘How large a sample do I need?’ If the sample size is too small, even a well-conducted study may fail to answer its research question or to detect important effects or associations or may estimate those effects or associations too imprecisely. Similarly, if the sample size is too large, the study will be more difficult and costly, and the size may even lead to a loss in accuracy. Hence, optimum sample size is an essential component of any research. Careful consideration of sample size and power analysis during the planning and design stages of clinical research are crucial [1].
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Cingi, C., Muluk, N.B. (2017). Setting the Size. In: Quick Guide to Good Clinical Practice . Springer, Cham. https://doi.org/10.1007/978-3-319-44344-7_14
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DOI: https://doi.org/10.1007/978-3-319-44344-7_14
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