Title of article
Sample size calculation in medical studies
Author/Authors
Pourhoseingholi، Mohamad Amin نويسنده Research Center for Gastroenterology and Liver Disease, Shahid Beheshti University of Medical Sciences, Tehran, Iran , , Vahedi، Mohsen نويسنده Gastroentrology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Vahedi, Mohsen , Rahimzadeh، Mitra نويسنده ,
Issue Information
فصلنامه با شماره پیاپی سال 2013
Pages
4
From page
14
To page
17
Abstract
Optimum sample size is an essential component of any research. The main purpose of the sample size calculation is to
determine the number of samples needed to detect significant changes in clinical parameters, treatment effects or
associations after data gathering. It is not uncommon for studies to be underpowered and thereby fail to detect the
existing treatment effects due to inadequate sample size. In this paper, we explain briefly the basic principles of sample
size calculations in medical studies.
Journal title
Gastroenterology and Hepatology From Bed to Bench
Serial Year
2013
Journal title
Gastroenterology and Hepatology From Bed to Bench
Record number
1242835
Link To Document