PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 9147961

A computer program for calculation of sample size.

R Raveendran
View original source ↗Export metadata ↓

Abstract

Sample size must be determined while planning a study to ensure that valid conclusions can be drawn when the study is over. different formulae for calculating the required size of the sample are used for different study designs and situations. A computer program is described here to ease the complexity of calculation of sample size for studies designed to use students 't' test.

Explore related subjects

Sample SizeSoftwareStatistics as TopicJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

R Raveendran. 1996. A computer program for calculation of sample size.. https://pubmed.ncbi.nlm.nih.gov/9147961/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMedDate not supplied

[Practical aspects regarding sample size in clinical research].

BACKGROUND: The knowledge of the right sample size let us to be sure if the published results in medical papers had a suitable design and a proper conclusion according to the statistics analysis. To estimate the sample size we must consider the type I error, type II error, variance, the size of the effect, significance and power of the test. To decide what kind of mathematics formula will be used, we must define what kind of study we have, it means if its a prevalence study, a means values one or a comparative one. In this paper we explain some basic topics of statistics and we describe four simple samples of estimation of sample size.

Sample Size↗