Key result
Portuguese KCCQ-12 shows strong validity in heart failure, correlating closely with the MLHFQ.
Why the study?
The KCCQ-12 was developed in English to assess health status in patients with heart failure, but its Portuguese version needed assessment of internal consistency and construct validity.
Cross-Sectional (n=124)
No
Effect estimate: r = -0.77
p-value: p=<0.001
The Portuguese version of the KCCQ-12 demonstrates high internal consistency and construct validity, supporting its use for assessing health status in Brazilian patients with heart failure with reduced ejection fraction.
Supports Portuguese KCCQ-12 for Brazilian HFrEF assessment; extends validation to non-English speakers but leaves responsiveness untested.
The Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) is a simple, feasible, and sensitive questionnaire developed in English for assessing the health status (symptoms, function, and quality of life) of patients with heart failure (HF). We aimed to assess the internal consistency and construct validity of the Portuguese version of KCCQ-12. We administered the KCCQ-12, the Minnesota Living Heart Failure (MLHFQ), and the New York Heart Association (NYHA) classification by telephone. Internal consistency was assessed with Cronbach’s Alpha (α-Cronbach) and construct validity with correlations to the MLHFQ and NYHA. Internal consistency was high (α-Cronbach = 0.92 for the Overall Summary score and 0.77–0.85 for the subdomains). Construct validity was supported by finding high correlations between the KCCQ-12 Physical Limitation and the Symptom Frequency domains with the physical domain of the MLHFQ (r = −0.70 and r = −0.76, p < 0.001 for both) and the Overall Summary scale with NYHA classifications (r = −0.72, p < 0.001). The Portuguese version of KCCQ-12 has high internal consistency and shows a convergent construct validity with other measures quantifying the health status of patients with chronic HF and can be used confidently in Brazil for research and clinical care.
No takes yet. Share an insight, caveat, or question.
Reis et al. (2023) conducted a cross-sectional in Heart failure with reduced left ventricular ejection fraction (n=124). Portuguese version of the Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) vs. Minnesota Living Heart Failure Questionnaire (MLHFQ) and NYHA classification was evaluated on Construct validity (correlation between KCCQ-12 and MLHFQ overall scores) (r = -0.77, p=<0.001). The Portuguese version of the KCCQ-12 demonstrated high internal consistency and strong construct validity, correlating significantly with the MLHFQ overall score (r = -0.77, p < 0.001) and NYHA classification.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: