ctmaCompFit | R Documentation |

Performs log-liklihood ratio tests to compare the fit of 2 models (CoTiMAFit objects created with `ctmaFit`

or `ctmaEqual`

), i.e., the difference between the two -2 times LLs between the first model and the more constrained second
model. The nested structure of the two models is assumed to be given and not checked.

```
ctmaCompFit(model1 = NULL, model2 = NULL)
```

`model1` |
Model 1 |

`model2` |
Model 2 |

Returns the the difference between the two -2 times LLs (Diff_Minus2LL), the associated difference in degrees of freedom (Diff_df (= Diff_n.params)), and the probability (prob).

```
minus2llDiffTest <- ctmaCompFit(CoTiMAFullInv23Fit_6,
CoTiMAFullInvEq23Fit_6)
summary(minus2llDiffTest)
```

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