title: Impact of socio-economic status on the hospital readmission of Congestive Heart Failure patients: a prospective cohort study.
abstract: BACKGROUND
  The aim of this study was to examine the impacts of multiple indicators of Socio-economic Status (SES) on Congestive Heart Failure (CHF) related readmission.
  
  
  METHODS
  A prospective study consisting of 315 patients without the history of admission due to CHF was carried out in Tehran during 2010 and 2011. They were classified into quartiles based on their SES applying Principal Component Analysis (PCA), and followed up for one year. Using stratified Cox regression analysis, Hazard Ratios (HRs) were computed to assess the impact of SES on the readmission due to CHF.
  
  
  RESULTS
  During the 12 months follow-up, 122 (40%) were readmitted at least once. HR of lowest SES patients vs. the highest SES patients (the fourth versus first quartile) was 2.66 (95% CI= 1.51-4.66). Variables including abnormal ejection fraction (<40%), poor physical activity, poor drug adherence, and hypertension were also identified as significant independent predictors of readmission.
  
  
  CONCLUSIONS
  The results showed low SES is a significant contributing factor to increased readmission due to CHF. It seems that the outcome of CHF depends on the SES of patients even after adjusting for some of main intermediate factors.
authors.affiliation: Research Center for Modelling in Health, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran. ; Non-Communicable Diseases Research Center, Endocrinology and Metabolism population sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Atefeh
authors.initials: A
authors.lastname: Noori
authors.affiliation: Regional Knowledge Hub, and WHO Collaborating Centre for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran. ; Research Center for Modelling in Health, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.
authors.forename: Mostafa
authors.initials: M
authors.lastname: Shokoohi
authors.affiliation: Research Center for Modelling in Health, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Baneshi
authors.affiliation: Cardiac Electrophysiology Research Center, Rajaee Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Nasim
authors.initials: N
authors.lastname: Naderi
authors.affiliation: Cardiac Intervention Research Center, Rajaee Cardiovascular, Medical and Research Center, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Hooman
authors.initials: H
authors.lastname: Bakhshandeh
authors.affiliation: Regional Knowledge Hub, and WHO Collaborating Centre for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran. ; Research Center for Modelling in Health, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.
authors.forename: Ali Akbar
authors.initials: AA
authors.lastname: Haghdoost
keywords: Congestive Heart Failure (CHF); Equity; Factor Analysis; Iran; Re-Hospitalization; Socio-Economic Status (SES)