title: Introduction to principal components analysis.
authors.affiliation: Stanford University, Department of Health Research and Policy, Division of Epidemiology, HRP Redwood Bldg, Stanford, CA 94305(∗). Electronic address: kcobb@stanford.edu.
authors.forename: Kristin L
authors.initials: KL
authors.lastname: Sainani
mesh_terms: D006801:Humans; D010810:Physical and Rehabilitation Medicine / Q000706:statistics & numerical data*; D025341:Principal Component Analysis / Q000379:methods*