Validation of the St. George's Respiratory Questionnaire in patients with COPD or asthma in Morocco

Int J Tuberc Lung Dis. 2006 Nov;10(11):1273-8.


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 (a) 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). FEV1 values were negatively correlated with all SGRQm scores.

Conclusion: The SGRQm yielded satisfactory psychometric properties.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Asthma / epidemiology
  • Asthma / physiopathology
  • Asthma / psychology*
  • Cross-Sectional Studies
  • Female
  • Forced Expiratory Volume / physiology
  • Humans
  • Male
  • Middle Aged
  • Morocco / epidemiology
  • Prevalence
  • Pulmonary Disease, Chronic Obstructive / epidemiology
  • Pulmonary Disease, Chronic Obstructive / physiopathology
  • Pulmonary Disease, Chronic Obstructive / psychology*
  • Quality of Life*
  • Severity of Illness Index
  • Surveys and Questionnaires / standards*