Section outline

  • Lecture: Selection Bias

    Internal vs. external validity; definition and classification of bias; distinguishing bias from random error; spotting and minimizing selection bias in descriptive, cross-sectional, case-control, and longitudinal (e.g., cohorts or trials) studies

    Faculty:  Jeffrey Martin

    Location:  Mission Hall 1400

    • Session Slides:

    • Selection Bias 2014 Final Post File

    • Session Audio/Video Recording (Access restricted to registered students):

    • Required Reading:

    • S & N:  Ch. 4, sections 4.1 - 4.2 (p. 109 - 116) and sections 4.4 - 4.4.2 (p. 133 - 139)

    • Optional Reading:

    • Hernán MA, Hernández-Díaz S, Robins JM. A structural approach to selection bias. Epidemiology. 15:615-25, 2004. File
      Not available unless: Your ID number contains 02
    • Robinson et al. Systematic review identifies number of stategies important for retaining study participants. J Clin Epi 60:757-765, 2007. File
      Not available unless: Your ID number contains 02

    • Assignment: Problem Set 6

    • Assignment Due Date:  October 28, 3014

    • Assignment Answer Key (Access restricted to registered students):