Psychiatry Publications
Title
Evaluating Clinical Rating Scales for Evidence-Based Dermatology: Some Basic Concepts
Document Type
Article
Publication Date
10-2005
Journal
Dermatologic Clinics
Volume
23
Issue
4
First Page
703
Last Page
706
URL with Digital Object Identifier
http://dx.doi.org/10.1016/j.det.2005.05.004
Abstract
Evidence-based dermatology has necessitated the development of rating scales that measure multidimensional and abstract constructs, such as quality of life. This article discusses some basic psychometric concepts, such as reliability, validity, standardization, and measurement precision, which need to be considered when choosing a clinical rating instrument. Also discussed is the impact of these parameters on increasing the statistical power of a clinical trial.
