Topic: Why Mixed-Effects Models

Worked Example: Pooled Versus Subject-Weighted Concentration Means

Worked Example: Standard Errors Under Repeated Sampling

Why More Samples per Patient Cannot Fully Replace More Patients

When Sparse Sampling Makes Pooled Curves Misleading

Subject Identity Creates Dependence Across Concentrations

Simpson’s Paradox in Pooled Pharmacokinetic Summaries

Repeated Pharmacokinetic Profiles as Clustered Data

Reading Spaghetti Plots to Reveal Heterogeneity and Dependence

Pseudoreplication From Counting Samples as Independent Subjects

Pooled Concentration-Time Curves Can Hide Individual Trajectories