Modeling and Multivariate Methods - SAS

122 Fitting Standard Least Squares Models Chapter 3
Restricted Maximum Likelihood (REML) Method
Figure 3.49 Partial Report of REML Analysis
REML Results
A nice feature of REML is that the report does not need qualification (Figure 3.49). The estimates are all
properly shrunk and the standard errors are properly scaled (SAS Institute Inc. 1996). The variance
components are shown as a ratio to the error variance, and as a portion of the total variance.
There is no special table of synthetic test creation, because all the adjustments are automatically taken care
of by the model itself. There is no table of expected means squares, because the method does not need this.
If you have random effects in the model, the analysis of variance report is not shown. This is because the
variance does not partition in the usual way, nor do the degrees of freedom attribute in the usual way, for
REML-based estimates. You can obtain the residual variance estimate from the REML report rather than
from the analysis of variance report.
To obtain the standard deviations (square-root of the variance components), right-click on the REML
Variance Component Estimates report, and select Columns > Sqrt Variance Component.