Aims: The study compared quality outcomes, resource utilization, and costs in Medicare beneficiaries with chronic heart failure with reduced ejection fraction (HFrEF) with and without a worsening heart failure event (WHFE).
Methods: This retrospective observational study evaluated claims data for two cohorts of Medicare beneficiaries with chronic HFrEF who were enrolled in Medicare fee-for-service (FFS) or Medicare advantage (MA) plans. The index date was the first claim of HFrEF between October 2015 and September 2017. Patients with WHFE were identified if they had IV diuretic use or hospitalization for HF during 12 months after index date; with remaining patients classified as non-WHFE. During follow-up, starting from the 13th month after HFrEF index date to end of follow-up, generalized linear models were used to adjust for patient characteristics to compare mean per patient per year (PPPY) quality outcomes, resource utilization, and costs between HFrEF patients with and without WHFE.
Results: Of the 1,182,509 FFS and 28,645 MA patients with HFrEF, 34.2% and 32.5% developed WHFE, respectively. Compared to patients without WHFE, patients with WHFE had higher rates of all-cause 30-day readmissions (FFS: 42% vs. 31%; MA: 41% vs. 31%), hospitalizations (FFS: 2.27 vs. 1.36; MA: 1.47 vs. 0.78 PPPY) and ED visits (FFS: 1.82 vs. 1.25; MA: 1.43 vs. 0.96 PPPY); all comparisons p < .05. Mortality rates in FFS patients were higher among patients with WHFE (34.3%) compared to those without (23.4%). All-cause total PPPY costs were higher for patients with WHFE compared to those without by $20,825 in FFS and $15,974 in MA. Similar trends were observed for HF-related outcomes.
Conclusion: Medicare patients with chronic HFrEF experiencing a WHFE had worse quality outcomes as well as higher resource utilization and costs compared to those without WHFE, thus, suggesting the need for better treatments and interventions to manage these patients.
Keywords: A10; Healthcare resource utilization; I11; cost; health resources; heart failure/complications; hospitalization.