Table 2.
Correlation structure checking and model comparison
| Unstructured | Identity | Exchangeable | |
| AIC | 14 337.93 | 17 775.34 | 17 666.17 |
| BIC | 14 531.08 | 17 956.02 | 17 853.09 |
AIC, Akaike Information Criteria; BIC, Bayesian Information criteria.
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