title: Content validity of a health science evidence-based practice questionnaire (HS-EBP) with a web-based modified Delphi approach.
abstract: OBJECTIVE
  To develop a tool for measuring evidence-based practice (EBP) and to evaluate its content validity by Delphi technique. A five-factor/dimensions latent structure for the EBP construct was defined a priori and operationalized.
  
  
  METHODS
  Online Delphi technique.
  
  
  METHODS
  A group of 32 national EBP experts from different health professions.
  
  
  METHODS
  The experts rated the initial questionnaire items according to adequacy and relevance criteria using four-point Likert scales and including open fields for suggestions, with basic and supplementary criteria consensus established a priori.
  
  
  METHODS
  Level of consensus in the Content Validity Index Item.
  
  
  RESULTS
  An EBP construct solution was designed with the elements that constitute the operationalization proposal of the EBP. This initial version consisted of 76 items, whereas the version arising from the Delphi study was made up of 73 items. In the first round, 13 items did not reach the minimum level of consensus, and 12 of these were reformulated. Three additional items were removed in the second round.
  
  
  CONCLUSIONS
  A new psychometric tool forms measuring EBP with a five-factor structure, and 73 items obtained adequate content validity evidence based on expert opinion.
authors.affiliation: Faculty of Nursing and Physiotherapy, University of the Balearic Islands, 07122 Palma de Mallorca  (Balearic Islands), Spain.
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Fernández-Domínguez
authors.affiliation: Faculty of Psychology, University of the Balearic Islands, 07122 Palma de Mallorca (Balearic Islands), Spain.
authors.forename: Albert
authors.initials: A
authors.lastname: Sesé-Abad
authors.affiliation: Faculty of Nursing, Physiotherapy, Podiatry and Occupational Therapy, University of Málaga, 29071 Málaga, Spain.
authors.forename: Jose Miguel
authors.initials: JM
authors.lastname: Morales-Asencio
authors.affiliation: Son Espases Teaching Hospital, Palma de Mallorca (Balearic Islands), Spain.
authors.forename: Pedro
authors.initials: P
authors.lastname: Sastre-Fullana
authors.affiliation: Sant Joan de Deu Hospital, 07007 Palma de Mallorca (Balearic Islands), Spain.
authors.forename: Sandra
authors.initials: S
authors.lastname: Pol-Castañeda
authors.affiliation: Faculty of Nursing and Physiotherapy, University of the Balearic Islands, 07122 Palma de Mallorca  (Balearic Islands), Spain.
authors.forename: Joan Ernest
authors.initials: JE
authors.lastname: de Pedro-Gómez
mesh_terms: D032921:Consensus; D003697:Delphi Technique; D055317:Evidence-Based Practice / Q000379:methods* / Q000592:standards*; D006282:Health Personnel; D006801:Humans; D020407:Internet; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Delphi technique; content validity; evidence-based practice; reproducibility of results