Sample size and power estimation for studies with health related quality of life outcomes: a comparison of four methods using the SF-36

We describe and compare four different methods for estimating sample size and power, when the primary outcome of the study is a Health Related Quality of Life (HRQoL) measure. These methods are: 1. assuming a Normal distribution and comparing two means; 2. using a non-parametric method; 3. Whitehead...

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Detalles Bibliográficos
Autor principal: Walters, Stephen J
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2004
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC421748/
https://www.ncbi.nlm.nih.gov/pubmed/15161494
http://dx.doi.org/10.1186/1477-7525-2-26

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC421748/
https://www.ncbi.nlm.nih.gov/pubmed/15161494
http://dx.doi.org/10.1186/1477-7525-2-26

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