title: Validation of the Spanish Version of the COPD-Q Questionnaire on COPD Knowledge.
abstract: BACKGROUND
  Although recognition of the importance of educating chronic obstructive pulmonary disease (COPD) patients has grown in recent years, their understanding of this disease is not being measured due to a lack of specific instruments. The aim of this study was to validate the COPD-Q questionnaire, a 13-item instrument for determining COPD knowledge.
  
  
  METHODS
  The COPD-Q was translated and backtranslated, and subsequently submitted to logic and content validation by a group of COPD experts and 8 COPD patients. Reliability was studied in an independent group of 59 patients with severe COPD seen in the pulmonology ward or clinics of 6 hospitals in Spain (Andalusia, Baleares, Castilla-La Mancha, Galicia and Madrid). This sample was also used for other internal and external validations.
  
  
  RESULTS
  The mean age of the group was approximately 70 years and their health awareness was low-to-medium. The number of correct answers was 8.3 (standard deviation: 1.9), median 8, range 3-13. Floor and ceiling effects were 0% and 1.5%, respectively. Internal consistency of the questionnaire was good (Cronbach's alpha=0.85) and reliability was also high, with a kappa coefficient >0.6 for all items and an intraclass correlation efficient of 0.84 for the total score.
  
  
  CONCLUSIONS
  The 13-item COPD-Q is a valid, applicable and reliable instrument for determining patients' knowledge of COPD.
authors.affiliation: Servicio de Neumología, Hospital General Universitario Gregorio Marañón, Madrid, España; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, España; Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, España. Electronic address: lpuente.hgugm@salud.madrid.org.
authors.forename: Luis
authors.initials: L
authors.lastname: Puente-Maestu
authors.affiliation: Servicio de Neumología, Hospital General Universitario Gregorio Marañón, Madrid, España; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, España.
authors.forename: Jorge
authors.initials: J
authors.lastname: Chancafe-Morgan
authors.affiliation: Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, España; Servicio de Neumología, Hospital Clínico San Carlos, Madrid, España.
authors.forename: Myriam
authors.initials: M
authors.lastname: Calle
authors.affiliation: Servicio de Neumología, Hospital Clínico San Carlos, Madrid, España.
authors.forename: Juan L
authors.initials: JL
authors.lastname: Rodríguez-Hermosa
authors.affiliation: Servicio de Neumología, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España.
authors.forename: Rosa
authors.initials: R
authors.lastname: Malo de Molina
authors.affiliation: Unidad de Neumología, Hospital General Nuestra Señora del Prado, Talavera de la Reina, Toledo, España.
authors.forename: Ángel
authors.initials: Á
authors.lastname: Ortega-González
authors.affiliation: Servicio de Neumología, Hospital de Son Llàtzer, Palma de Mallorca, España.
authors.forename: Antonia
authors.initials: A
authors.lastname: Fuster
authors.affiliation: Unidad Médico Quirúrgica de Enfermedades Respiratorias, Hospital Virgen del Rocío, Sevilla, España; Instituto de Biomedicina de Sevilla (IBIS), Sevilla, España; Facultad de Medicina, Universidad Hispalense, Sevilla, España.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Márquez-Martín
authors.affiliation: Servicio de Neumología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complejo Hospitalario Universitario de A Coruña (CHUAC), Sergas, A Coruña, España; Universidade da Coruña (UDC), A Coruña, España.
authors.forename: Pedro J
authors.initials: PJ
authors.lastname: Marcos
authors.affiliation: Servicio de Neumología, Hospital General Universitario Gregorio Marañón, Madrid, España; Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, España.
authors.forename: Laura
authors.initials: L
authors.lastname: Ramírez
authors.affiliation: Department of Clinical Pharmacy, University of Tennessee College of Pharmacy, Knoxville, Tennessee, Estados Unidos; Department of Family Medicine, University of Tennessee Graduate School of Medicine, Knoxville, Tennessee, Estados Unidos.
authors.forename: Shaunta'
authors.initials: S
authors.lastname: Ray
authors.affiliation: Department of Clinical Pharmacy, University of Tennessee College of Pharmacy, Knoxville, Tennessee, Estados Unidos; Department of Family Medicine, University of Tennessee Graduate School of Medicine, Knoxville, Tennessee, Estados Unidos.
authors.forename: Andrea
authors.initials: A
authors.lastname: Franks
mesh_terms: D000368:Aged; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007802:Language; D008297:Male; D010353:Patient Education as Topic; D029424:Pulmonary Disease, Chronic Obstructive; D011795:Surveys and Questionnaires
keywords: Alfabetización en salud; Chronic obstructive pulmonary disease; Cuestionario de conocimiento; Educación de pacientes; Enfermedad pulmonar obstructiva crónica; Health awareness; Knowledge questionnaire; Patient education