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Nutrition in Clinical Practice, Vol. 23, No. 1, 76-84 (2008)
DOI: 10.1177/011542650802300176

Clinical Research

Biostatistics Primer: Part 2

Brian R. Overholser, PharmD and Kevin M. Sowinski, PharmD, BCPS, FCCP

Department of Pharmacy Practice, Purdue University, School of Pharmacy and Pharmaceutical Sciences, West Lafayette and Indianapolis, Indiana; and the Department of Medicine, Indiana University, School of Medicine, Indianapolis, Indiana

Correspondence: Kevin M. Sowinski, PharmD, BCPS, FCCP, Purdue University, Department of Pharmacy Practice, W7555 Myers Building, WHS, 1001 West Tenth Street, Indianapolis, IN 46202. Electronic mail may be sent to ksowinsk{at}purdue.edu.

Biostatistics is the application of statistics to biologic data. This article is the second part of a 2-part series on the application of statistics in nutrition science. The first article, published in the December 2007 issue, reviewed descriptive statistics. Inferential statistics, to be discussed in this article, can be used to make predictions based on a sample obtained from a population or some large body of information. It is these inferences that are used to test specific research hypotheses. This article focuses on inferential statistics and their application in the nutrition and biomedical literature. Additionally, this review will outline some of the most commonly used statistical tests found in the biomedical literature.


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