Some Practical Guidelines for Effective Sample-Size Determination in Observational Studies

Some Practical Guidelines for Effective Sample-Size Determination in Observational Studies

Abstract- The purpose of this present study was to determine the right sample size in observational study which is focusing on medical or health sciences field. Sample size calculation is actually depends on the type of how the study is designed. For example different formulas are used to calculate the sample size in different type of the study. In this article, the formula of single proportion and two proportions is discussed and an example from medical research, which may contribute to the understanding of this problem, is presented.

Wan Ahmad, Wan Muhamad Amir; Department of Mathematics, Faculty of Science and Technology, Universiti Malaysia Terengganu (UMT).

Wan Mohd Amin, Wan Abdul Aziz; Department of Language and
Communication, Universiti Malaysia Terengganu (UMT)

Azlida Aleng, Nor; Department of Mathematics, Faculty of Science and Technology, Universiti Malaysia Terengganu (UMT).

Mohamed, Norizan; Department of Mathematics, Faculty of Science and Technology, Universiti Malaysia Terengganu (UMT).

Aceh International Journal of Science and Technology; Vol 1, No 2: May - August 2012

2088-9860

Graduate School of Syiah Kuala University

2013-02-27

http://jurnal.unsyiah.ac.id/AIJST/article/view/127/120

application/pdf

eng

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

Peer-reviewed Article

http://jurnal.unsyiah.ac.id/AIJST/article/view/127

10.13170/aijst.1.2.127