ACE and hydrops fetalis: Low EF and gender (men) resulting in increased odds ratios for readmission in the multivariate analysis were included; we also included information about medications, beta-blocker and ACE inhibitor/ARB, which had demonstrated lowering HF mortality [19–21], and sodium and Hgb, which may affect HF rehospitalization and mortality [22, 23] and have been used in other models (http://www.readmissionscore.org/heart_failure.php), although they were not independently associated with readmission in the multivariate analysis.