Table 4.
Model fit comparing the restrained model 1 with the unrestrained model 2.
| Models | Log-likelihood ratio G2 | H0 value ℓ | Number of free parameters (p) | Degrees of freedom df = W – P - 1 | Akaike Information Criterion (AIC) | Bayesian Information Criterion (BIC) |
|---|---|---|---|---|---|---|
| Model 1 | 5302.09 | −2651.04 | 9 | 8 | 5320.09 | 5361.68 |
| Model 2 | 5290.58 | −2645.29 | 13 | 4 | 5316.58 | 5376.66 |
| Difference | 11.51 | 4 | p = 0.021 | |||
Model 1 is a model allowing different group-specific transition patterns. Model 2 is a model with a constraint on equal transition matrix across intervention arms.