Observational Studies Introduction Slide
	Quote
	Types of Non-Causal Associations
	Random Sample of Study Subjects
	Random Sample of Study Subjects, cont.
	Return to work post CABG surgery MCOs vs. VA
	Steps in the analytic process…
	Valid Relationship
	Criteria for assessing causal associations
	A Taxonomy of Epidemiologic Study Designs 1
	A Taxonomy of Epidemiologic Study Designs 2
	A Taxonomy of Epidemiologic Study Designs 3
	Types of Observational Studies 1
	Types of Observational Studies 2
	Cohort Studies(prospective)
	Prospective Cohort Study
	Prospective Cohort StudyKey Points
	Prospective Cohort Study Strengths and Weaknesses
	Types of Observational Studies 3
	Cohort Studies (retrospective/historical)
	Retrospective Cohort Study
	Retrospective Cohort Study Strengths and weaknesses
	Types of Observational Studies 4
	Case Control Studies (retrospective)
	Case Control Study
	Case Control Study Key Points
	Case Control Study Strengths and Weaknesses
	Summary

• Lecture 3: Descriptive Epidemiology
• Lecture 1: Critiquing a Randomized Controlled Trial
• Lecture 9: Common Statistical Tests
• Lecture 9: Common Statistical Tests
• Lecture 10: Regression Techniques