Background: Assessment of health-related quality of life is widely recommended by European health agencies in relevant research studies as well as in clinical care.
Aims: To validate the French version of the MacNew heart disease health-related quality of life questionnaire.
Methods: As part of the International HeartQoL Project, 323 French-speaking patients with ischaemic heart disease (angina, n=76; myocardial infarction [MI], n=155; heart failure, n=91; mean age 58.6±11.3 years) were recruited at seven cardiac rehabilitation centres. All patients completed the French versions of the MacNew questionnaire, the Short Form-36 Health Survey (SF-36) and the Hospital Anxiety and Depression Scale, to evaluate the psychometric properties of the French version of the MacNew instrument.
Results: The mean MacNew global scale scores were 4.6±0.8, 5.0±1.0 and 4.8±0.9 in patients with angina, MI and heart failure, respectively (P<0.05, MI versus angina). We observed minimal missing items and ceiling effects and no floor effects. Factor analysis confirmed a three factorial structure explaining 55.9% of the observed variance. Internal consistency reliability (Cronbach's α) ranged from 0.86 to 0.94 and test-retest reliability ranged from 0.68 to 0.73 Convergent validity was confirmed in the total group and each diagnosis, although the correlations between the MacNew physical subscale and the SF-36 mental component summary were higher than expected. Discriminative validity was partially confirmed with the SF-36 health transition item and fully confirmed with anxiety and depression as predictor variables.
Conclusion: The French version of MacNew questionnaire is recommended for assessing health-related quality of life in French-speaking patients with ischaemic heart disease.
Keywords: Cardiopathie ischémique; French version; Ischaemic heart disease; MacNew questionnaire; Quality of life; Qualité de vie; Questionnaire MacNew; Version française.
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