Sample size for ophthalmology studies.
Indian J Ophthalmol
;
2000 Sep; 48(3): 245-50
Artigo
em Inglês
| IMSEAR
| ID: sea-71018
ABSTRACT
Knowledge and the usage of actual sample size formulae are a necessity as validity of the inferences from research studies is often dependent on this. This paper explains how sample sizes are calculated. The concept of sampling variation is explained to emphasize the need for its proper calculation. Sample size formulae are explained with examples to provide researchers with a means of calculating the sample sizes for the commonly used study designs. Ophthalmic data are used as examples. It is perceived that this will improve the quality of inferences drawn from ophthalmic research studies.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Oftalmologia
/
Pesquisa
/
Humanos
/
Reprodutibilidade dos Testes
/
Tamanho da Amostra
Idioma:
Inglês
Revista:
Indian J Ophthalmol
Ano de publicação:
2000
Tipo de documento:
Artigo
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