BackgroundThe Coronary Artery Disease Education Questionnaire (CADE-Q), an instrument
aimed at assessing patients’ knowledge about coronary artery disease (CAD),
was originally developed and psychometrically validated in Brazil. It was
later translated, cross-culturally adapted, and validated to English.
Although both versions demonstrated good reliability and validity, new
studies in the area have pointed out the need of implementing the CADE-Q
with other components of cardiac rehabilitation (CR) programs, such as
psychologic factors, which had not been considered in previous version and
were added in the subsequent, adapted version. Thus, a second version of
CADE-Q was developed in English, the CADE-Q II.Objectiveto translate, culturally adapt and psychometrically validate the CADE-Q II in
Brazilian Portuguese.MethodsAfter translation and review by a Committee of specialists in CR, a version
in Brazilian Portuguese was generated and tested in 307 patients in CR.
Test-retest reliability was assessed by intraclass correlation coefficient
(ICC) in 49 patients; internal consistency was assessed using Cronbach’s
alpha (α); and, criterion validity was assessed regarding patients’
educational level and family income. The level of significance adopted for
all tests was 5%.ResultsAfter the ICC analysis, 4 items were excluded. The questionnaire was
considered internally consistent (α > 0.7). Associations were
found between the mean total scores and the variables schooling (p <
0.001) and income (p < 0.001). Median total score was 53 (14) points
corresponding to 65.4% of the total possible score.ConclusionThe Portuguese version of the CADE-Q II showed sufficient reliability,
consistency and validity, supporting its use in future studies.