Cohort Studies

Contents

Introduction & Learning Objectives
Introduction
Learning Objectives

Prospective versus Retrospective Studies
Prospective Versus Retrospective Cohort Studies
Prospective Cohort Studies:
Retrospective Cohort Studies
An Ambidirectional Cohort Study
Closed (Fixed) versus Open Cohorts

Selection of Subjects
Selection of Subjects
General Population Cohorts versus Special Exposure Cohorts
The Comparison Group

Follow Up of Subjects
Follow Up in Cohort Studies
Non-participation in a Prospective Cohort Study
Selection Bias in Retrospective Cohort Studies

Advantages and Disadvantages of Cohort Studies
Advantages & Disadvantages of Cohort Studies
Advantages
Disadvantages of Prospective Cohort Studies
Disadvantages of Retrospective Cohort Studies

A Critical Thinking Exercise
Analysis of a Cohort Study Using an Excel Spreadsheet
A Critical Thinking Exercise

Content ©2016. All Rights Reserved.
Date last modified: March 3, 2016.
Wayne W. LaMorte, MD, PhD, MPH

Boston University School of Public Health