Sample size: from formulae to concepts

Authors

  • Rakesh R. Pathak Department of Pharmacology, C.U. Shah Medical College, Surendranagar 363001, India

Keywords:

Confidence interval, Confidence limit, Standard error of mean, Margin of error, Standard normal variate, Power

Abstract

Sample size can be calculated from many online calculators or tables. But the use of these instruments is rational only when we understand our input data and the concept behind them completely. Terminologies like confidence interval, confidence limit, standard error of mean, margin of error, standard normal variate, power, significance level etc. and extent to which population size or chances of occurrence of an outcome can affect our sample size remain to be well understood before using these software solutions.

References

Pathak RR. Small size sampling. Int J Basic Clin Pharmacol 2012;1(1):43-4.

Pathak RR. Small size sampling? Int J Basic Clin Pharmacol 2012;1(2):118-9.

Charantimath PM. Total Quality Management, 3rd Edition. Pearson Education, 2009:180.

Bland M. An introduction to medical statistics, Second Edition. Oxford University Press, Great Britain, 1995:110.

Glader BE. Glucose-6-phosphate dehydrogenase deficiency and related disorders of hexose monophosphate shunt and glutathione metabolism. In: Wintrobe's Clinical Hematology, 10th ed, Lee GR, Foerster J, Lukens J, et al. (Eds), Baltimore, Williams & Wilkins; 1999:1178.

Bland M. An introduction to medical statistics, Second Edition. Oxford University Press, Great Britain, 1995:109.

Bland M. An introduction to medical statistics, Second Edition. Oxford University Press, Great Britain, 1995:334.

Bland M. An introduction to medical statistics, Second Edition. Oxford University Press, Great Britain, 1995:143-4.

Bland M. An introduction to medical statistics, Second Edition. Oxford University Press, Great Britain, 1995:137.

Downloads

Published

2017-02-04

How to Cite

Pathak, R. R. (2017). Sample size: from formulae to concepts. International Journal of Basic & Clinical Pharmacology, 1(3), 223–224. Retrieved from https://www.ijbcp.com/index.php/ijbcp/article/view/1432

Issue

Section

Educational Forum