title: [Validation of the chronic respiratory questionnaire in Chilean patients with chronic airflow limitation].
abstract: BACKGROUND
  Chronic respiratory diseases are an important problem in Chile, causing disability and worsening the quality of life.
  
  
  OBJECTIVE
  To validate the Spanish version of the Chronic Respiratory Questionnaire (CRQ) to be used in Chilean population.
  
  
  METHODS
  The CRQ was applied to 38 patients with chronic respiratory diseases. At the same time the functional and physiologic status of patients (the 6 Minute Walking Test and spirometry) was assessed in an independent and blinded fashion.
  
  
  RESULTS
  CRQ scores were associated with 6 Minute Walking Test and forced expiratory volume results (p < 0.01 adjusted by age, sex and smoking). The Internal Consistency analysis showed a Cronbach alpha between 0.60 and 0.89.
  
  
  CONCLUSIONS
  Considering the construct validation as an on-going process, the present results give additional evidence supporting the use of the CRQ in Chilean population to evaluate the health-related quality of life of patients with chronic respiratory diseases.
authors.affiliation: Departamento de Cirugía y Traumatología, Facultad de Medicina, Universidad de La Frontera, Temuco, Chile. pseron@ufro.cl
authors.forename: Pamela
authors.initials: P
authors.lastname: Serón
authors.forename: Pablo
authors.initials: P
authors.lastname: Riedemann
authors.forename: Antonio
authors.initials: A
authors.lastname: Sanhueza
authors.forename: Arlette
authors.initials: A
authors.lastname: Doussoulin
authors.forename: Paola
authors.initials: P
authors.lastname: Villarroel
mesh_terms: D000328:Adult; D002677:Chile; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D011788:Quality of Life; D015203:Reproducibility of Results; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires