Indian Journal of Urology
: 2011  |  Volume : 27  |  Issue : 4  |  Page : 503--507

Sample size matters: A guide for urologists

Peter Hinh, Steven E Canfield 
 Division of Urology, University of Texas Medical School at Houston, Houston, Texas, USA

Correspondence Address:
Steven E Canfield
6431 Fannin, MSB 6.018, Houston, TX 77030

Understanding sample size calculation is vitally important for planning and conducting clinical research, and critically appraising literature. The purpose of this paper is to present basic statistical concepts and tenets of study design pertaining to calculation of requisite sample size. This paper also discusses the significance of sample size calculation in the context of ethical considerations. Scenarios applicable to urology are utilized in presenting concepts.

How to cite this article:
Hinh P, Canfield SE. Sample size matters: A guide for urologists.Indian J Urol 2011;27:503-507

How to cite this URL:
Hinh P, Canfield SE. Sample size matters: A guide for urologists. Indian J Urol [serial online] 2011 [cited 2020 Aug 5 ];27:503-507
Available from:;year=2011;volume=27;issue=4;spage=503;epage=507;aulast=Hinh;type=0