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Course Catalog

340.694.89 Power and Sample Size for the Design of Epidemiological Studies

Summer Inst. term
1 credits
Academic Year:
2019 - 2020
Sat 06/01/2019 - Mon 06/17/2019
Auditors Allowed:
Grading Restriction:
Ayesha Khan
Course Instructor :

Either 340.601 or 340.751, and prior enrollment in 140.622, 550.695, or equivalent is required. Prior knowledge of some computing software (R, Stata, and/or SAS) is required for students taking the course for credit. For auditors, either knowledge of the above computing software or prior exposure to some sample size software (PS, PASS, nQuery Advisor or Epi Info) is required.


Systematically introduces students to sample size and power analysis for the most common epidemiological study designs. Provides participants with the key conceptual elements and practical tools for computing sample sizes to achieve a given level of precision and power in statistical tests.

Learning Objectives:

Upon successfully completing this course, students will be able to:

  1. Identify the factors which influence power and sample size, including the variability of the measurement and the desired precision of an effect estimate.
  2. Calculate required sample sizes and minimal detectable difference for one- and two-sample hypotheses within common epidemiological designs (cross-sectional, longitudinal clinical trial or cohort study, case-control study).
  3. Determine the power of statistical tests for a given sample size and minimal detectable difference in the context of epidemiological study designs
  4. Use modern computational and graphical tools in assessing power and sample size
Methods of Assessment:

Each of the eight modules will be followed by an online quiz of 6 questions. Students who fail (achieving less than 4 correct answers) will be offered the opportunity to retake the quiz. The quiz from each of the eight modules must be passed for course credit. Quizzes are 12.5% each.

Instructor Consent:

No consent required

Special Comments:

Students need to listen to lectures and complete 8 online quizzes until they successfully master the material.