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Covariance structure comparison criteria.
| Covariance structure | AIC | BIC | Log-likelihood |
|---|---|---|---|
| AR (1) | 5735.543 | 5875.03 | −2833.771 |
| UN | 5752.048 | 5891.535 | −2842.024 |
| CS | 5750.104 | 5889.591 | −2841.052 |
Note: AR (1) represents autoregressive first order, UN indicates unstructured.
Abbreviation: CS, compound symmetry.
