- performs prospective power and sample size analysis for linear models, with a variety of goals:
- determining the sample size required to get a significant result with adequate probability (power)
- characterizing the power of a study to detect a meaningful effect
- conducting what-if analyses to assess sensitivity of the power or required sample size to other factors
- statistical analyses that are covered include Type III tests and contrasts of
fixed effects in univariate linear models, optionally with covariates
- obtain separate analyses for observations in groups
- produces tabular and graphical output
- uses ODS to create a SAS data set corresponding to any table
For further details see the SAS/STAT User's Guide:
The GLMPOWER Procedure
( PDF | HTML )
Examples
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