Table of Contents

What is a case crossover design?

Relationship of the case crossover study to other types of studies.

What is effect period of the exposure?

What is hazard period?

Types of control data one can use in a case crossover

Example of control data.  

Analysis: If the control data were from a comparable control period.

Analysis: If the control data were from the past exposure. Calculate concurrence observed.    

                Calculate concurrence expected odds
Risk ratio calculation

Discussion.

Bibliography of case crossover design application.