An improvement of ≥5 points in KCCQ-OS was independently associated with decreased mortality (HR 0.59; 95% CI 0.44-0.80; P<.001), whereas improvement in NYHA class was not associated with outcomes.
Cohort (n=2,872)
Sí
Does a change in KCCQ-OS or NYHA class better predict clinical outcomes in outpatients with HFrEF?
In contemporary US clinical practice, KCCQ-OS is more sensitive to clinically meaningful changes in health status over time than NYHA class and has greater prognostic value for mortality and HF hospitalization in patients with HFrEF.
Estimación del efecto: HR 0.59 (95% CI 0.44-0.80)
valor p: p=<.001
Importance: It is unclear how New York Heart Association (NYHA) functional class compares with patient-reported outcomes among patients with heart failure (HF) in contemporary US clinical practice. Objective: To characterize longitudinal changes and concordance between NYHA class and the Kansas City Cardiomyopathy Questionnaire Overall Summary Score (KCCQ-OS), and their associations with clinical outcomes. Design, Setting, and Participants: This cohort study included 2872 US outpatients with chronic HF with reduced ejection fraction across 145 practices enrolled in the CHAMP-HF registry between December 2015 and October 2017. All patients had complete NYHA class and KCCQ-OS data at baseline and 12 months. Longitudinal changes and correlations between the 2 measure were examined. Multivariable models landmarked at 12 months evaluated associations between improvement in NYHA and KCCQ-OS from baseline to 12 months with clinical outcomes occurring from months 12 through 24. Statistical analyses were performed from March to August 2020. Exposure: Change in health status, as defined by 12-month change in NYHA class or KCCQ-OS. Main Outcomes and Measures: All-cause mortality, HF hospitalization, and mortality or HF hospitalization. Results: In total, 2872 patients were included in this analysis (median interquartile range age, 68 59-75 years; 872 30.4% were women; and 2156 75.1% were of White race). At baseline, 312 patients (10.9%) were NYHA class I, 1710 patients (59.5%) were class II, 804 patients (28.0%) were class III, and 46 patients (1.6%) were class IV. For KCCQ-OS, 1131 patients (39.4%) scored 75 to 100 (best health status), 967 patients (33.7%) scored 50 to 74, 612 patients (21.3%) scored 25 to 49, and 162 patients (5.6%) scored 0 to 24 (worst health status). At 12 months, 1002 patients (34.9%) had a change in NYHA class (599 20.9% with improvement; 403 14.0% with worsening) and 2158 patients (75.1%) had a change of 5 or more points in KCCQ-OS (1388 48.3% with improvement; 770 26.8% with worsening). The most common trajectory for NYHA class was no change (1870 65.1%), and the most common trajectory for KCCQ-OS was an improvement of at least 10 points (1047 36.5%). After adjustment, improvement in NYHA class was not associated with subsequent clinical outcomes, whereas an improvement of 5 or more points in KCCQ-OS was independently associated with decreased mortality (hazard ratio, 0.59; 95% CI, 0.44-0.80; P < .001) and mortality or HF hospitalization (hazard ratio, 0.73; 95% CI, 0.59-0.89; P = .002). Conclusions and Relevance: Findings of this cohort study suggest that, in contemporary US clinical practice, compared with NYHA class, KCCQ-OS is more sensitive to clinically meaningful changes in health status over time. Changes in KCCQ-OS may have more prognostic value than changes in NYHA class.
Greene et al. (Wed,) conducted a cohort in Heart failure with reduced ejection fraction (n=2,872). Improvement in KCCQ-OS or NYHA class was evaluated on All-cause mortality (HR 0.59, 95% CI 0.44-0.80, p=<.001). An improvement of ≥5 points in KCCQ-OS was independently associated with decreased mortality (HR 0.59; 95% CI 0.44-0.80; P<.001), whereas improvement in NYHA class was not associated with outcomes.