Importance
While there is increasing emphasis on incorporating patient-reported outcome measures (PROMs) in routine care for heart failure (HF) patients, how best to interpret longitudinally collected PROMs is unknown.
Objective
To examine the strength of association between a prior, a current or change in Kansas City Cardiomyopathy Questionnaire (KCCQ) scores with death and hospitalization in patients with preserved (HFpEF) and reduced (HFrEF) ejection fractions.
Design, Setting, and Participants
Secondary analyses of the TOPCAT trial of 1,372 patients with HFpEF and the HF-ACTION trial that included 1,669 patients with HFrEF.
Exposure
Prior, current and change in KCCQ Overall Summary scores (KCCQ-os) in 5-points increments (higher scores = better health status)
Main Outcomes and Measures
Time to cardiovascular death/first HF hospitalization (primary outcome) and all-cause death (secondary outcome).
Results
Each 5-point difference in prior or current KCCQ-os scores were associated with a 6%-9% and 6%-8% lower risk for subsequent cardiovascular death/first HF hospitalization in patients with HFpEF and HFrEF in unadjusted analyses (all P<0.001). Results were similar for change in KCCQ-os. In models with the prior and current KCCQ-os, only the current KCCQ-os was significantly associated with 10% and 7% lower risk/5 points for subsequent cardiovascular death/first HF hospitalization in patients with HFpEF and HFrEF, respectively (all P<0.001). Similar results were observed when the current and Δ KCCQ-os were considered together, when adjusted for important patient and treatment characteristics, when including 3 sequential KCCQ-os scores and when examining all-cause death as the outcome.
Conclusions and Relevance
In serial health status evaluations of HF patients, the most recent score was most strongly associated with subsequent death and cardiovascular hospitalization in HFpEF and HFrEF. Measuring serial PROMs in the clinical care of patients with HF can provide an updated assessment of prognosis.
Trial Registration
URL: http://www.clinicaltrials.gov. Unique identifier: TOPCAT (NCT00094302) and HF-ACTION (NCT00047437)