Topic: Observational Studies and Experiments

Matched-Pairs Experiments

Factorial Experiments and Treatment Combinations

Explanatory Variables, Responses, and Study Units

Diagnosing Confounding in Study Scenarios

Cross-Sectional, Cohort, and Case-Control Studies

Controlling Confounding Before Data Collection

Control Groups and Placebo Controls

Confounding in Study Design

Confounders, Mediators, and Other Variables

Common Errors in Interpreting Study Designs