Real-World Effectiveness and Costs of Yiqi Fumai Lyophilized Injection in Coronary Heart Disease-Related Chronic Heart Failure
This two-center retrospective cohort study will use de-identified electronic health records from June 1, 2021 through June 1, 2026 to compare patients with coronary heart disease-related chronic left ventricular dysfunction or chronic heart failure and Qi and Yin deficiency syndrome who initiated Yiqi Fumai lyophilized injection within 24 hours after a common time zero with eligible patients who did not initiate the drug within 24 hours. Treatment was determined during routine care and was not assigned by the researchers. The planned cohort includes 200 randomly sampled records, comprising 150 initiators and 50 non-initiators. The primary economic outcome is total direct medical cost during the index hospitalization, and the primary comparative-effectiveness outcome is heart-failure-related rehospitalization within 90 days after time zero. Baseline differences will be addressed primarily using propensity-score overlap weighting.
The index date was from June 1, 2021 through June 1, 2026, the patient received... [+8]
Critical diagnostic, index, exposure, outcome, or cost information is missing to... [+5]