Case Control Study
	
	
	
	
	
	
	
	Step 1: Learning Objectives
	
	
	
	
		- Apply the principles of case-control studies:
			
			
			- Formulate research hypotheses
			
 - Define population at risk for disease
			
 - Define eligibility criteria for cases and controls
			
 - Describe methods of accrual of cases and controls
			
 - Define exposure
			
				
				
			
 - Define exposure
			
				
				
			
 
		
		 - Employ steps in data analysis of case-control studies to analyze the data:
			
			
			- Administrative procedures before start of the study
			
 - Calculate disease odds ratio
			
				
				
			
 - Calculate exposure odds ratio
			
				
				
			
 
			
		 - Explain your findings and discuss problems in data analysis:
			
			
			- Explain how the size of the odds ratio influences your conclusions about the association between exposure and outcome
			
 - Give your suggestions for carrying out this case-control study
			
 - Discuss the importance of defining the underlying population for selection of cases and controls
			
 - Discuss the importance of exchangeability of cases and controls
			
 - Explain why exposure odds ratio is identical to the disease odds ratio
			
 - Discuss the relationship between odds ratio and relative risk 
			
 - Discuss the value of statistical data analysis in reaching conclusions about causality of the exposure-outcome relationship