A method for assessing clinically relevant individual cognitive change in older adult populations

Academic Article

Abstract

  • The evaluation of individual cognitive change has relied heavily upon the raw change score, defined simply as the difference between follow-up and baseline scores. However, raw change scores are susceptible to the confounding effects of both regression-to-the-mean and practice effect. The clinical relevance of raw change scores for the older adult is also obscured by normal age-related cognitive change. The present study illustrates the use of a standardized regression-based (SRB) methodology to generate an alternative to the raw change score; the SRB change score. SRB change scores provide a standardized alternative to the raw change score, allowing the clinician to evaluate the magnitude of change on one or more variables along a common metric that controls for practice effect, regression-to-the-mean, and normal cognitive decline. Case data illustrate how SRB change scores can identify clinically relevant cognitive change in the individual older adult patient.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Sawrie SM; Marson DC; Boothe AL; Harrell LE
  • Volume

  • 54
  • Issue

  • 2