
Keywords: طبقه بندی بین المللی بیماری ها، نسخه 9; AHF; acute heart failure; AMA; against medical advice; CCS; Clinical Classifications Software; HF; heart failure; ICD-9; International Classification of Diseases, 9th revision; IQR; interquartile range; NRD; National Readmission Database; PSM; propensity