Interpreting epidemiologic evidence: strategies for study design and analysis.

1. Introduction 2. The Nature of Epidemiologic Evidence 3. Strategy for Drawing Inferences from Epidemiologic Evidence 4. Selection Bias in Cohort Studies 5. Selection Bias in Case-Control Studies 6. Bias Due to Loss of Study Participants 7. Confounding 8. Measurement and Classification of Exposure 9. Measurement and Classification of Disease 10. Random Error 11. Integration of Evidence across Studies 12. Characterization of Conclusions