| Table 6. Likelihood values and p-value for the likelihood ratio test for the model reduction. It is entirely the users responsibility to ensure that a likelihood ratio test is meaningful. | ||||
| Model | Negative log likelihood | Number of parameters | Degrees of freedom | P value |
| Base | 153.73 | 15 | ||
| Current | 171.91 | 13 | 2 | 0.0000 |