title: The obesity paradox in stroke: impact on mortality and short-term readmission.
abstract: BACKGROUND
  The aim of the present study was to assess the association of obesity with the mortality of hospitalized patients with acute stroke and the risk of readmission in less than 30 days.
  
  
  METHODS
  A retrospective chart review of a cohort of consecutive patients admitted with stroke as the primary reason for discharge in Spain between January 1, 2005, and December 31, 2011, was performed. Patients with a diagnosis of obesity were identified. The mortality and readmittance indexes of obese patients were compared against the subpopulation without theses diagnosis.
  
  
  RESULTS
  A total of 201,272 stroke admittances were analyzed, and 14,047 (7.0%) diagnosis of obesity were identified. In-hospital global mortality reached 14.9%, and readmittance risk was 5.9%. Obese patients showed a lower in-hospital mortality risk (odds ratio [OR], .71; 95% confidence interval [CI], .67-.76) and early readmittance risk (OR, .89; 95% CI, .82-.96) than the nonobese even after adjusting for possible confounding factors.
  
  
  CONCLUSIONS
  Obesity in those hospitalized for stroke is associated with reduced in-hospital mortality risk and early readmittance.
authors: Servicio de Medicina Interna, Hospital Rey Juan Carlos, Móstoles, Spain.
authors: Raquel
authors: R
authors: Barba
authors: Servicio de Medicina Interna, Hospital Clínico Universitario San Carlos, Madrid, Spain.
authors: Javier
authors: J
authors: Marco
authors: Servicio de Medicina Interna, Hospital Universitario Fuenlabrada, Madrid, Spain.
authors: Justo
authors: J
authors: Ruiz
authors: Servicio de Medicina Interna, Hospital Universitario Fuenlabrada, Madrid, Spain.
authors: Jesús
authors: J
authors: Canora
authors: Servicio de Medicina Interna, Hospital Universitario Fuenlabrada, Madrid, Spain.
authors: Juan
authors: J
authors: Hinojosa
authors: Servicio de Medicina Interna, Hospital Severo Ochoa, Leganés, Spain.
authors: Susana
authors: S
authors: Plaza
authors: Servicio de Medicina Interna, Hospital Universitario Fuenlabrada, Madrid, Spain. Electronic address: antonio.zapatero@salud.madrid.org.
authors: Antonio
authors: A
authors: Zapatero-Gaviria
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D015331:Cohort Studies; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000150:complications / Q000453:epidemiology / Q000401:mortality; D016017:Odds Ratio; D010359:Patient Readmission / Q000706:statistics & numerical data*; D012307:Risk Factors; D020521:Stroke / Q000150:complications / Q000453:epidemiology* / Q000401:mortality
keywords: Stroke; mortality; obesity; readmission