Validation of the St George's respiratory questionnaire in patients with COPD or asthma in Morocco
SETTING: Chronic obstructive pulmonary disease (COPD) and asthma are a public health problem in Morocco. Their evaluation should be supplemented by quality of life measurement, but there is no specific instrument available in local Moroccan Arabic. OBJECTIVE: To validate a Moroccan Arabic version of the St George's Respiratory Questionnaire (SGRQ) in patients with COPD or asthma in Morocco. DESIGN: After a rigorous translation process of the SGRQ into local Moroccan Arabic (SGRQm), the SGRQm, spirometry, Fletcher scale and a visual analogical scale (VAS) were administered to each patient at recruitment. Data were used to examine the construct validity and reliability of the SGRQm. To examine the test-retest reliability, patients completed the SGRQm a second time 10 days later. RESULTS: A total of 131 patients with a mean age of 52 years were recruited into the study. Patients had a mean forced expiratory volume in one second (FEV1) of 1.70 1 and a mean VAS of 51.5 mm. Internal consistency of symptoms, activity and impact components was assessed using Cronbach's alpha (α) reliability coefficient; they were 0.94, 0.91 and 0.90, respectively. The test-retest reliability of components scores ranged from 0.70 to 0.87. The Fletcher scale correlated with all SGRQm scores, while the VAS had a similar correlation except with symptoms (P > 0.05). FEV 1 values were negatively correlated with all SGRQm scores. CONCLUSION: The SGRQm yielded satisfactory psychometric properties.
El Razi K, Nejjari C, Benjelloun MC, Bourkadi J, Afif H, Serhier Z, et al. Validation of the St George's respiratory questionnaire in patients with COPD or asthma in Morocco. International Journal of Tuberculosis and Lung Disease. 2006;10(11):1273-8.
||asthma and COPD patients||Both||15 - 91||
Measure does not require training