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Paper Information

Journal:   ARCHIVES OF IRANIAN MEDICINE   MAY 2013 , Volume 16 , Number 5; Page(s) 295 To 300.
 
Paper: 

REVIEW ARTICLE: SAMPLE SIZE CALCULATION FOR EPIDEMIOLOGIC STUDIES: PRINCIPLES AND METHODS

 
 
Author(s):  KAMANGAR FARIN*, ISLAMI FARHAD
 
* DEPARTMENT OF PUBLIC HEALTH ANALYSIS, SCHOOL OF COMMUNITY HEALTH AND POLICY, MORGAN STATE UNIVERSITY, PORTAGE AVENUE CAMPUS, BALTIMORE, MD 21251
 
Abstract: 

This paper discusses the statistical principles, methods, and software programs used to calculate sample size. In addition, it reviews the practical challenges faced in calculating sample size. We show that because of such challenges, statistical calculations often do not provide us with a clear-cut number for the study sample size; rather they suggest a range of reasonable numbers. The paper also discusses several important nonstatistical considerations in determination of sample size, such as novelty of the study and availability of resources.

 
Keyword(s): POWER, SAMPLE SIZE, TYPE I ERROR, TYPE II ERROR
 
References: 
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