title: "Not statistically different" does not necessarily mean "the same": the important but underappreciated distinction between difference and equivalence studies.
authors.affiliation: Center for Health Care Evaluation, VA Palo Alto Health Care System, 795 Willow Road (MPD-152), Menlo Park, CA 94025, USA. Alexander.Harris2@va.gov
authors.forename: Alex H S
authors.initials: AH
authors.lastname: Harris
authors.forename: Sara
authors.initials: S
authors.lastname: Fernandes-Taylor
authors.forename: Nicholas
authors.initials: N
authors.lastname: Giori
mesh_terms: D006801:Humans; D012107:Research Design; D013223:Statistics as Topic; D013810:Therapeutic Equivalency; D016896:Treatment Outcome