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**Usage**: **mxCompare**(*base*, *comparison*, *digits* = 3)

*base*: An MxModel object or list of MxModel objects.

*comparison*: A MxModel object or list of MxModel objects.

*digits*: A numeric setting table decimal precision.

This function is provided to allow the user to compare the fit of one or more models to a base model.

The output is a table with one row per model comparison as follows:

base | comparison | ep | minus2LL | df | AIC | diffLL | diffdf | p |

Name of the base model | Name of the comparison model | Estimated parameters of the comparison model | Minus 2*log-likelihood of the comparison model | Degrees in freedom of the comparison model | Akaike's Information Criterion for the comparison model | Change in minus 2*log-likelihood | Change in degrees of freedom | Significance level of the change in fitness function |

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