If you need a tool to calculate your sample size, you may want to try these links:
http://www.pwpamplona.com/wen/calcu/calculadora1.htm
An easy to use calculator from Navarra (Spain). In Spanish.
http://www.stat.ubc.ca/~rollin/stats/ssize/
A series of Java Script tools by Rollin Brant (University of British Columbia) to calculate sample size in the most frequent situations.
http://www.epibiostat.ucsf.edu/biostat/sampsize.html
A very complete web link from UCSF
http://biostat.mc.vanderbilt.edu/wiki/Main/PowerSampleSize
A free program from Vanderbilt University, by William Dupont and Walter Plummer.
http://hedwig.mgh.harvard.edu/sample_size/size.html
By David Schoenfeld , from the Massachusetts General Hospital- Harvard University.
http://www.sealedenvelope.com/power_binary.php
They also have a tool to create a randomisation list:
https://www.sealedenvelope.com/freerandomiser/v1/lists
More links in Spanish:
http://www.fisterra.com/mbe/investiga/9muestras/9muestras2.asp
http://www.psico.uniovi.es/Dpto_Psicologia/metodos/tutor.7/p3.html
http://www.seh-lelha.org/tamuestra.htm
Thanks for reading!
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Si quieres calcular el tamaño de tu muestra, quizá te interese probar los siguientes enlaces:
http://www.pwpamplona.com/wen/calcu/calculadora1.htm
Una calculadora fácil de usar de la Universidad de Navarra (España)
http://www.stat.ubc.ca/~rollin/stats/ssize/
Una serie de herramientas Java por Rollin Brant (Universidad de British Columbia), para calcular el tamaño de la muestra en las situaciones más frecuentes
http://www.epibiostat.ucsf.edu/biostat/sampsize.html
Un enlace muy completo de la Universidad de California San Francisco
http://biostat.mc.vanderbilt.edu/wiki/Main/PowerSampleSize
Un programa gratuito de la Vanderbilt University, por William Dupont y Walter Plummer.
http://hedwig.mgh.harvard.edu/sample_size/size.html
Por David Schoenfeld , del Massachusetts General Hospital- Harvard University.
http://www.sealedenvelope.com/power_binary.php
También tienen una herramienta para aleatorización en este enlace:
https://www.sealedenvelope.com/freerandomiser/v1/lists
Más enlaces en español:
http://www.fisterra.com/mbe/investiga/9muestras/9muestras2.asp
http://www.psico.uniovi.es/Dpto_Psicologia/metodos/tutor.7/p3.html
http://www.seh-lelha.org/tamuestra.htm
Gracias por leer!
Evidence Based Healthcare and Biostatistics for those who, as many doctors and health workers, hate numbers (thus the name of the blog). It aims to be a way to share ideas, resources, tools and training links, and a place to discuss specific health issues from an epidemiological perspective. Our desktop is a portrait of Karl Pearson (1857 - 1936), a prominent figure in Statistics and author of the book "The Grammar of Science" Please Share your comments!
Tuesday, January 31, 2012
SAMPLE SIZE CALCULATION // Cálculo de tamaño de la muestra
Etiquetas:
calculator,
random,
random list,
randomisation,
sample size,
tamaño de la muestra
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