title: Validation of the Evidence-Based Practice Confidence (EPIC) Scale With Occupational Therapists.
abstract: OBJECTIVE
  This study evaluated the reliability, minimal detectable change (MDC), and construct validity of the Evidence-Based Practice Confidence (EPIC) scale among occupational therapists.
  
  
  METHODS
  In a cross-sectional mail survey, 126 occupational therapists completed the EPIC scale and a questionnaire to provide data for validity testing. Seventy-nine occupational therapists (63%) completed a second EPIC scale a median of 24 days later.
  
  
  RESULTS
  Test-retest reliability was .92 (95% confidence interval [.88, .95]). The MDC values at the 90% and 95% confidence levels were 3.9 percentage points and 4.6 percentage points, respectively. The total EPIC score was significantly associated with holding a master's or doctoral degree; education in evidence-based practice (EBP); higher EBP knowledge and skill; and frequently searching, reading, and using research findings in clinical decision making (p < .05).
  
  
  CONCLUSIONS
  The EPIC scale has excellent reliability and acceptable construct validity for use in evaluating EBP self-efficacy among occupational therapists.
authors.affiliation: Julie Helene Clyde, MSc, OT Reg. (Ont.), was Graduate Student, Rehabilitation Sciences Institute, School of Graduate Studies, University of Toronto, Toronto, Ontario, at the time of the study.
authors.forename: Julie Helene
authors.initials: JH
authors.lastname: Clyde
authors.affiliation: Dina Brooks, PhD, PT, is Professor, Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, Ontario.
authors.forename: Dina
authors.initials: D
authors.lastname: Brooks
authors.affiliation: Jill I. Cameron, PhD, is Associate Professor, Department of Occupational Science and Occupational Therapy, Faculty of Medicine, University of Toronto, Toronto, Ontario.
authors.forename: Jill I
authors.initials: JI
authors.lastname: Cameron
authors.affiliation: Nancy M. Salbach, PhD, PT, is Associate Professor, Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, Ontario; nancy.salbach@utoronto.ca.
authors.forename: Nancy M
authors.initials: NM
authors.lastname: Salbach