title: Validation of the chronic respiratory questionnaire in the Colombian population with chronic obstructive pulmonary disease.
abstract: OBJECTIVE
  To assess the validity and reliability of the chronic respiratory questionnaire (CRQ) in the measurement of HRQL in the Colombian population with COPD.
  
  
  METHODS
  A cross-sectional study was conducted with a sample of 200 patients diagnosed with COPD according to GOLD criteria. Convergence validity was evaluated by correlating the questionnaire results with other clinical variables such as exercise tolerance, forced expiratory volume at the first second (FEV1), and depression levels.
  
  
  RESULTS
  HRQL measured through the CRQ correlated significantly with the 6-min walk test (r = 0.34), just as the dimensions fatigue (r = 0.37) and dyspnoea correlated with the FEV1 test (r = 0.21) and the dimensions emotional function and disease management with depression levels (r = -0.79). The Generalized Structured Component Analysis (GSCA) with the prespecified model is showed, and the total variance explained by the items in the model was 61.5 % (FIT = 0.615), unweighted least squares (GFI = 0.998), and standardised root mean square (SRMR = 0.084), indicating that the model fits adequately.
  
  
  CONCLUSIONS
  The CRQ presents evidence of adequate validity and reliability in the Colombian population. Its use is recommended to measure HRQL in patients with COPD, although future validations will be needed to identify the property of sensitivity to change.
authors: Fundación Universitaria del Área Andina, Pereira, Colombia, jestrada@funandi.edu.co.
authors: Jorge M
authors: JM
authors: Estrada Álvarez
authors: Ximena
authors: X
authors: Ossa García
authors: Carmen I
authors: CI
authors: del Quijano del Gordo
authors: Luis
authors: L
authors: Bustos
authors: Diana P
authors: DP
authors: Urina
authors: Celso F
authors: CF
authors: Pérez
authors: John E
authors: JE
authors: Ossa
authors: Edwin
authors: E
authors: Moreno Rojas
mesh_terms: D000328:Adult; D000368:Aged; D003105:Colombia; D003430:Cross-Sectional Studies; D004417:Dyspnea / Q000503:physiopathology / Q000523:psychology; D004644:Emotions; D017079:Exercise Tolerance / Q000502:physiology; D005221:Fatigue; D005260:Female; D005541:Forced Expiratory Volume; D006304:Health Status; D006630:Hispanic or Latino; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology* / Q000523:psychology*; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D016138:Walking