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Overview of study design.
Note: Identification period: patients with at least one heart failure hospitalization (HFH) were identified during this time. Index date: date of first HFH during the identification period. Pre‐index period: 4 years prior to index date. During this time, patients had no HFH (‘clean' period). Follow‐up period: until study end (31 Dec 2017), death, and transfer‐out date (whichever event was earliest).
