Validation of the HeartQol questionnaire in patients with non-valvular atrial fibrillation and flutter
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Abstract
The aim – to evaluate the psychometric properties of HeartQoL in patients with non-valvular atrial fibrillation-flutter (AF–AFl), by assessing its internal consistency, construct validity, and test-retest reliability.
Material and methods. The study consisted of two phases: cross sectional, including 329 patients with AF–AFl who filled in HeartQol, SF-12, AFEQT and HADS for the evaluation of internal consistency, construct, discriminative validities and longitudinal one, including 53 patients completing HeartQoL twice to evaluate test-retest reliability.
Results. Internal consistency was sufficient, Cronbach’s alpha (α)=0.94 for physical HeartQol scale and 0.88 for psychological HeartQol scale. The construct validity was sufficient, as subscales of HeartQoL had moderate to strong correlations with similar (r≥0.55) and weakly correlated (r≤0.55) with dissimilar subscales of other questionnairies. The HeartQoL demonstrated ability to distinguish between different clinical subgroups of patients, indicating sensitivity.
Conclusions. The HeartQoL showed overall satisfactory psychometric properties, demonstrating it to be a valid instrument in the evaluation of health related quality of life in patients with AF–AFl.
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