title: Overview, Definitions, and Goals for ASHA's Treatment Outcomes and Clinical Trials Activities (What Difference Do Outcome Data Make to You?).
abstract: This article examines differences between efficacy and effectiveness, describes two research designs related to measuring efficacy and effectiveness, and describes the American Speech-Language-Hearing Association's (ASHA's) efforts relative to these research designs, with examples presented for how each of these designs can be used in the school setting. Outcomes studies and clinical trials research are the particular focus of the article. The characteristics of each type of research are described and related to the school setting.
authors.affiliation: American Speech-Language-Hearing Association, Rockville, MD.
authors.forename: Herbert M
authors.initials: HM
authors.lastname: Baum