Required sample size for comparing two independent means
نویسندگان
چکیده
منابع مشابه
Determining the sample size required to compare vegetation and soil characteristics in two independent groups using effect size
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Sample size calculation plays an important role in clinical research. In clinical research, a sufficient number of patients is necessary to ensure the validity and the success of an intended trial. From a statistical point of view, if a clinically meaningful difference between a study treatment and a control truly exists, such a difference can always be detected with an arbitrary power as long ...
متن کاملStatistical notes for clinical researchers: Sample size calculation 1. comparison of two independent sample means.
74 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Statistical notes for clinical researchers: Sample size calculation 1. Comparison of two...
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In clinical research, parameters required for sample size calculation are usually unknown. A typical approach is to use estimates from some pilot studies as the true parameters in the calculation. This approach, however, does not take into consideration sampling error. Thus, the resulting sample size could be misleading if the sampling error is substantial. As an alternative, we suggest a Bayes...
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ژورنال
عنوان ژورنال: Marine Medicine
سال: 2020
ISSN: 2587-7828,2413-5747
DOI: 10.22328/2413-5747-2020-6-2-106-113