Topic: Between-Subject, Between-Occasion and Residual Variability

Marginal Covariance From Linearized Individual Predictions

Interpreting Clearance–Volume Random-Effect Correlation

Identifiability of Correlated Random Effects

Identifying Occasion Variability With Replicated Periods

Indexing Between-Occasion Random Effects

Exponential Random Effects and Geometric Interpretation

Distinguishing Residual Correlation From Occasion Variability

Diagnosing Residual Variance Misspecification

Deriving Residual Variance Functions From Observation Models

Correlated Occasion Effects Across Pharmacokinetic Parameters