Validación del Cuestionario de la enfermedad respiratoria crónica en pacientes chilenos con limitación crónica del flujo aéreo
Chronic respiratory diseases are an important problem in Chile, causing disability and worsening the quality of life. Aim: To validate the Spanish version of the Chronic Respiratory Questionnaire (CRQ) to be used in Chilean population. Material and 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 a 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 (Rev Méd Chile 2003; 131: 1243-50).