Sample Size Calculation for Epidemiologic Studies: Principles and Methods

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Pubblicato in:	Archives of Iranian Medicine vol. 16, no. 5 (May 2013), p. 295-300
Autore principale:	Kamangar, Farin, MD, PhD
Altri autori:	Islami, Farhad, MD, PhD
Pubblicazione:	Academy of Medical Sciences of I.R. Iran
Soggetti:	Epidemiologic Methods Epidemiologic Studies Models, Statistical Research Design > statistics & numerical data Sample Size Software
Accesso online:	Citation/Abstract Full Text Full Text - PDF
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Descrizione
Abstract:	This paper discusses the statistical principles, methods, and software programs used to calculate sample size. In addition, it reviews the practical challenges faced in calculating sample size. We show that because of such challenges, statistical calculations often do not provide us with a clear-cut number for the study sample size; rather they suggest a range of reasonable numbers. The paper also discusses several important nonstatistical considerations in determination of sample size, such as novelty of the study and availability of resources.
ISSN:	1029-2977 1735-3947
Fonte:	Health & Medical Collection