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  Module 2
  Module 3
  Module 4
  Module 5

Investigation 2-9
Designs, Diagrams, and Tables


Students identify, for each of the four basic epidemiological study designs, where data from a flow diagram "fit" into a 2x2 table, reinforcing the value of a 2x2 table as a tool for:

  • Classifying disease occurrence according to exposure status
  • Calculating risks of disease among the exposed and unexposed
  • Calculating the relative risk
  • Making inferences

Investigation Preparation Checklist

Check alignment with standards.

National or State file

Review Epidemiology Background for Module 2.

Word or PDF file

Review teacher's notes and slides:  [en espaņol:]

  • Not animated.  Recommended for quick viewing.
  • PDF: 561KB

  • Not animated.  Recommended for printing.
  • Word: 1,506KB

  • Animated viewing with Microsoft Internet Explorer.
  • HTML Web file: 1,840KB

  • Animated viewing with Netscape or other browser.
  • PowerPoint file: 678KB

    Copy Investigation 2-9: Epi Log Worksheet for each student.  [en espaņol:]

    Word or PDF file

    Estimated Time / Time Management

    Approximately one class period. Time can be managed by decreasing the number of challenge questions.

    Look For Students To:

    Identify a flow diagram for each of the four basic epidemiological study designs.

    Relate flow diagrams to 2x2 tables for each study design.