The number of units (persons, animals, patients, specified circumstances, etc.) in a population to be studied. The sample size should be big enough to have a high likelihood of detecting a true difference between two groups. (From Wassertheil-Smoller, biostatistics and epidemiology, 1990, p95)


<b>Sample sizes</b> for detecting

Sample sizes for detecting

Effect <b>Size</b>: The magnitude of

Effect Size: The magnitude of

<b>Sample Size</b>

Sample Size



Determining <b>Sample Size</b>

Determining Sample Size

set a <b>sample size</b> level of

set a sample size level of

appropriate <b>sample size</b>

appropriate sample size

<b>Sample Size</b> Table

Sample Size Table

Symptoms and diagnosis



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Last update: September 2014