Psychometric Testing of the Kansas City Cardiomyopathy Questionnaire 12 in A European Population.
Paolo Iovino, Hamilton Dollaku, Laura Rasero and 4 others
PMID 40013908WHAT IT FOUND
The Italian KCCQ-12 appears usable for assessing quality of life in Italian patients with heart failure.
Scores can be compared across ejection fraction groups, but some items behaved differently in those groups.
Key findings
01The Italian KCCQ-12 was understandable to 10 patients and fit the expected 4 domains plus an overall summary score in 510 patients with heart failure.
02The KCCQ-12 worked similarly enough across reduced, midrange and preserved ejection fraction groups to allow comparisons, but some items behaved differently.
03Physical limitation, symptom frequency, social interference, and the overall summary score predicted death at 12 months, but the quality-of-life domain did not.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The sample had inadequate self-care at baseline, so patients may have had poorer quality of life than heart failure patients with good self-care. The analysis used baseline data from a study of an educational intervention, so it could not test whether the questionnaire gives stable scores over time. The study tested only an Italian version in patients with heart failure and inadequate self-care, so it does not show the tool works in other European groups or other cardiac diseases. Two items showed floor effects, and some items behaved differently across ejection fraction groups.
Declared interests
The study was funded by a grant from the Center of Excellence for Nursing Scholarship, Rome, Italy. The supplied text does not report author conflict-of-interest declarations.
The easy way to misread this
Do not conclude that the KCCQ-12 is validated for all European heart failure patients or for other cardiac diseases. The study tested an Italian version in patients with heart failure and inadequate self-care, and the authors say further testing is needed in other populations.