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)


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<b>Sample sizes</b> for detecting

Sample sizes for detecting
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Effect <b>Size</b>: The magnitude of

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

Sample Size
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X1

X1
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Determining <b>Sample Size</b>

Determining Sample Size
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set a <b>sample size</b> level of

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

appropriate sample size
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<b>Sample Size</b> Table

Sample Size Table
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Symptoms and diagnosis

Symptoms:

    



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Last update: September 2014