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Modeling and Multivariate Methods - SAS

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252 Performing Nonlinear Regression Chapter 9<br />

Nonlinear Fitting with Fit Curve<br />

Figure 9.6 Plot of Model <strong>and</strong> Data<br />

Model Options<br />

Each model report contains a red triangle menu with some or all of the following options:<br />

Test Parallelism Gives an analysis for testing if the fitted curves for each group have the same shape. This<br />

option is available only when a Group variable is specified on the platform launch window. This option<br />

is available for the Sigmoid models <strong>and</strong> the Fit Linear model. For details, see “Test Parallelism” on<br />

page 253.<br />

Area Under Curve Gives the area under the fitted curve. This option is available only for the following<br />

models: One Compartment, Two Compartment, Gaussian Peak, <strong>and</strong> Lorentzian Peak. The range of<br />

integration depends on the type of model <strong>and</strong> is specified in the report.<br />

If a Grouping variable is specified on the platform launch window, an Analysis of Means is performed<br />

for comparing the estimates across groups. If the result for a group exceeds a decision limit, the result is<br />

considered different from the overall mean of AUC.<br />

Compare Parameter Estimates Gives an analysis for testing the equality of parameters across levels of<br />

the grouping variable. This option is available only when a Group variable is specified on the platform<br />

launch window. For details, see “Compare Parameter Estimates” on page 254.<br />

Equivalence Test Gives an analysis for testing the equivalence of models across levels of the grouping<br />

variable. This option is available only when a Group variable is specified on the platform launch<br />

window. For details, see “Equivalence Test” on page 255.

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