title: Heterarchy and hierarchy: a critical appraisal of the "levels of evidence" as a tool for clinical decision making.
authors.affiliation: Department of Occupational Therapy, Sargent College of Health and Rehabilitation Sciences, Boston University, 630 Commonwealth Avenue, Boston, Massachusetts 02215, USA tickle@bu.edu
authors.forename: Linda
authors.initials: L
authors.lastname: Tickle-Degnen
authors.forename: Gary
authors.initials: G
authors.lastname: Bedell
mesh_terms: D003661:Decision Support Techniques; D019317:Evidence-Based Medicine; D006801:Humans; D009788:Occupational Therapy / Q000592:standards*; D018802:Patient-Centered Care / Q000592:standards*; D014481:United States