ArticleCanadian respiratory journal
Validation of a new questionnaire with generic and disease-specific qualities: the McGill COPD Quality of Life Questionnaire.
Article in Canadian respiratory journal. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 7 citations in OpenAlex.
- A qualitative study of the impact of severe asthma and its treatment showing that treatment burden is neglected in existing asthma assessment scales.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2015Article
- A review of the most common patient-reported outcomes in COPD--revisiting current knowledge and estimating future challenges.International journal of chronic obstructive pulmonary disease · 2015Review
- Development and preliminary validation of the chronic obstructive pulmonary disease scale quality of life instruments for chronic diseases-chronic obstructive pulmonary disease based on classical test theory and generalizability theory.Chronic respiratory diseaseArticle
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Authors and funding
10 authors at 7 institutions in 1 country.
Funding
Abstract
backgroundA validated health-related quality of life questionnaire in chronic obstructive pulmonary disease (COPD) with advantages of both generic- and disease-specific questionnaires is needed to capture patients' perspectives of severity and impact of the disease. The McGill COPD questionnaire was created to include these advantages in English and French. It assesses three domains: symptoms, physical function and feelings with 29 items (12 from the 36-item Short-Form Health Survey with 17 from the previously developed COPD-specific module).
objectiveTo evaluate the psychometric properties of this newly developed hybrid questionnaire in subjects with COPD.
methodsData from a multicentre, prospective cohort study involving four hospitals with COPD subjects undergoing pulmonary rehabilitation were used. Patient evaluations included health-related quality of life (the new McGill COPD questionnaire, the St Georges Respiratory Questionnaire and the 36-item Short-Form Health Survey) and pulmonary function tests pre-and postrehabilitation. Reliability, validity and responsiveness were tested.
resultsThe study included 246 COPD subjects (111 females) with a mean age of 66 years, 87% ex- and 8% current smokers (mean 61 pack-years) and mean forced expiratory volume in 1 s of 1.12 L (Global initiative for chronic Obstructive Lung Disease stages: 2, 27%; 3, 33%; and 4, 37%). Missing data were <2% and floor and ceiling effects were <5%. Internal consistency (Cronbach's alpha) was 0.68 to 0.82. Test-retest reliability (intracorrelation coefficients) ranged from 0.74 to 0.96 for the subscales, and 0.95 for the total score. Correlation with the St George's Respiratory Questionnaire was moderately high (r=-0.88 [95% CI -0.91 to -0.84]), consistent with the a priori hypothesis for convergent validity. The effect size was 0.33 (pre-postrehabilitation mean score difference = 6), suggesting a small to moderate change.
conclusionsThe new McGill COPD questionnaire showed high internal consistency, test-retest reliability, validity and moderate responsiveness in COPD subjects.
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