Article

Evaluation of health-related quality of life (HRQL) is important in
improving the quality of patient care. The aim of this study was to determine the
psychometric properties of the HeartQoL in patients with ischemic heart disease
(IHD), specifically angina, myocardial infarction (MI),
or ischemic heart
failure. METHODS: Data for the interim validation of the HeartQoL questionnaire
were collected in (a) a cross-sectional survey and (b) a prospective substudy of
patients undergoing either a percutaneous coronary intervention (PCI) or referred
to cardiac rehabilitation (CR) and were then analyzed to determine the
reliability, validity, and responsiveness of the HeartQoL questionnaire. RESULTS:
We enrolled 6384 patients (angina, n = 2111, 33.1%; MI, n = 2351, 36.8%; heart
failure, n = 1922, 30.1%) across 22 countries speaking 15 languages in the
cross-sectional study and 730 patients with IHD in the prospective substudy. The
HeartQoL questionnaire comprises 14-items with physical and emotional subscales
and a global score (range 0-3 (poor to better HRQL). Cronbach's alpha was
consistently >/=0.80; convergent validity correlations between similar HeartQoL
and SF-36 subscales were significant (r >/= 0.60, p < 0.001); discriminative
validity was confirmed with predictor variables: health transition, anxiety,
depression, and functional status. HeartQoL score changes following either PCI or
CR were significant (p < 0.001) with effect sizes ranging from 0.37-0.64.
CONCLUSION: The HeartQoL questionnaire is reliable, valid, and responsive to
change allowing clinicians and researchers to (a) assess baseline HRQL, (b) make
between-diagnosis comparisons of HRQL, and (c) evaluate change in HRQL in
patients with angina, MI, or heart failure with a single IHD-specific HRQL instrument.

Langue : ANGLAIS