Principles of sample size calculation
In most areas in life, it is difficult to work with populations and hence researchers work with samples. The calculation of the sample size needed depends on the data type and distribution. Elements include consideration of the alpha error, beta error, clinically meaningful difference, and the varia...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2010-01-01
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| Series: | Indian Journal of Ophthalmology |
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| Online Access: | http://www.ijo.in/article.asp?issn=0301-4738;year=2010;volume=58;issue=6;spage=517;epage=518;aulast=Gogtay |