Index of video lectures

Introduction to understanding interaction effects. The lecture describes how to interpret parameter estimates, in both main effects and interaction models, but with a specific emphasis on interactions. Examples use Cox regression, but the principles apply to all models.

Introduction to survival analysis, Kaplan-Meier method, and the log rank test.

Introduction to the Cox proportional hazards regression model.

Understanding the proportional hazards assumption. Testing for proportional hazards. Relaxing the proportional hazards assumption.