Abstract
ObjectiveTo assess the long-term cost-effectiveness of two multidisciplinary management programs for elderly patients hospitalized with chronic heart failure (CHF) and how it is influenced by patient characteristics. MethodsA trial-based analysis was conducted alongside a randomized controlled trial of 280 elderly patients with CHF discharged to home from three Australian tertiary hospitals. Two interventions were compared: home-based intervention (HBI) that involved home visiting with community-based care versus specialized clinic-based intervention (CBI). Bootstrapped incremental cost–utility ratios were computed based on quality-adjusted life-years (QALYs) and total healthcare costs. Cost-effectiveness acceptability curves were constructed based on incremental net monetary benefit (NMB). We performed multiple linear regression to explore which patient characteristics may impact patient-level NMB. ResultsDuring median follow-up of 3.2years, HBI was associated with slightly higher QALYs (+0.26years per person; p=0.078) and lower total healthcare costs (AU$ −13,100 per person; p=0.025) mainly driven by significantly reduced duration of all-cause hospital stay (−10days; p=0.006). At a willingness-to-pay threshold of AU$ 50,000 per additional QALY, the probability of HBI being better-valued was 96% and the incremental NMB of HBI was AU$ 24,342 (discounted, 5%). The variables associated with increased NMB were HBI (vs. CBI), lower Charlson Comorbidity Index, no hyponatremia, fewer months of HF, fewer prior HF admissions <1year and a higher patient's self-care confidence. HBI's net benefit further increased in those with fewer comorbidities, a lower self-care confidence or no hyponatremia. ConclusionsCompared with CBI, HBI is likely to be cost-effective in elderly CHF patients with significant comorbidity.
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