Evaluation of the AB Score for Prediction of Survival in Patients With Heart Failure in a Nationwide Cohort in Japan.

Background: Although a tool for sharing patient prognosis among all medical staff is desirable in heart failure (HF) cases, only a few simple HF prognostic scores are available. We previously presented the AB score, a simple user-friendly HF risk score, and validated it in a small single-center cohort. In the present study, we validated it in a larger nationwide cohort.