Background: No previous studies have evaluated the effects of traditional Chinese medicine (TCM) treatment on patients with heart failure (HF). Hence, in this study, we determined whether TCM treatment affects the healthcare burden and survival of HF patients.
Methods: Samples were retrieved from the registry of catastrophic illness patients of the Taiwan National Health Insurance Research Database (NHIRD). Based on a frequency (1:1) matched case-control design, patients with HF between 2000 and 2010 were designated as cases (TCM users) and controls (non-TCM users). TCM treatment for patients with HF was analyzed.
Results: Among these patients, 312 used TCM for HF treatment and exhibited significantly increased 5-year survival (p < .0001), with multivariate adjustment, compared with those without TCM use. Mean outpatient clinic visits at 1 year and 5 years after HF diagnosis were higher in TCM users, and accumulated medical costs were lower than in non-TCM users at 1 year. The hospitalization cost at 1-year follow-up was lower for TCM users than for non-TCM users. We found that, compared with non-TCM users, TCM users had an 86% reduction in risk of mortality in the compensated group, and a 68% reduction in the decompensated group receiving TCM treatment (aHR 0.32, 95% CI 0.20-0.52). The hazard ratio (HR) of Chinese herbal medicine (CHM) users with HF was significantly lower than that of non-users (aHR 0.24, 95% CI 0.16-0.35). We also analyzed the most commonly used herbal products as well as the HRs associated with their use, thus providing future research avenues.
Conclusions: This nationwide retrospective cohort study finds that combined therapy with TCM may improve survival in HF patients. This study also suggests that TCM may be used as an integral element of HF interventions on health care costs.
Keywords: NHIRD; heart failure; medical expenditure; survival; traditional Chinese medicine.