Cohort Studies


Learning Objectives

  1. 1.
    The fundamentals of a cohort study design are:
    1. a.

      Identify people who are free of disease at the beginning of the study

    2. b.

      Assemble cohorts of exposed and unexposed individuals

    3. c.

      Follow cohorts for the development of incident outcomes

    4. d.

      Compare the risks of incident outcomes in each cohort

  2. 2.
    Cohort studies have certain advantages:
    1. a.

      Can discern temporal relationships between the exposure and the outcome

    2. b.

      Can be used to evaluate multiple outcomes

  3. 3.
    Cohort studies have certain disadvantages:
    1. a.

      Observational design: other factors may be responsible for observed association

    2. b.

      May be inefficient for studying rare diseases or those with long latency periods

  4. 4.

    Cohort studies can be used to evaluate the risks and benefits of medication use.

  5. 5.

    Cohort studies can be used to calculate relative and attributable risks of disease.



Hormone Replacement Therapy Kidney Transplant Peripheral Arterial Disease Attributable Risk Serum Retinol 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.University of WashingtonSeattleUSA

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