title: Weekend hospital admission and discharge for heart failure: association with quality of care and clinical outcomes.
abstract: BACKGROUND
  Although hospital admissions during weekends have been associated with worse quality of care and worse outcomes in some but not all medical conditions, the impact of weekend versus weekday admission and discharge for heart failure (HF) has not been well studied. This study investigates the association of (1) weekend compared to weekday HF admissions and discharges with quality of care and (2) weekend versus weekday HF admissions with length of stay (LOS) and mortality in the hospital.
  
  
  METHODS
  Data were analyzed for 81,810 HF admissions at 241 sites participating in Get With the Guidelines (GWTG)-HF from January 2005 to September 2008. The cohort was stratified by weekend versus weekday admission and discharge. Generalized estimating equations adjusted for patient and hospital characteristics and clustering.
  
  
  RESULTS
  Mean age was 72 +/- 14 years; left ventricular ejection fraction (LVEF) was 39+/-17%. Inhospital mortality was 3.0% and median LOS 4 days. Weekend admission was associated with decreased odds of LVEF documentation. Weekend discharge was associated with decreased odds of LVEF documentation and completed discharge instructions. Weekend HF admission compared to weekday admission was associated with slightly higher risk-adjusted odds of longer inhospital LOS (1.03 [1.01-1.05] and increased inhospital mortality (1.13 [1.02-1.27]).
  
  
  CONCLUSIONS
  Among GWTG-HF hospitals, weekend admission and discharge for HF were associated with similar quality of care in many but not all measures. Risk-adjusted LOS was slightly longer and mortality moderately higher for weekend HF admissions.
authors.affiliation: Ahmanson-UCLA Cardiomyopathy Center, University of California, Los Angeles, CA 90095-1679, USA.
authors.forename: Tamara B
authors.initials: TB
authors.lastname: Horwich
authors.forename: Adrian F
authors.initials: AF
authors.lastname: Hernandez
authors.forename: Li
authors.initials: L
authors.lastname: Liang
authors.forename: Nancy M
authors.initials: NM
authors.lastname: Albert
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Labresh
authors.forename: Clyde W
authors.initials: CW
authors.lastname: Yancy
authors.forename: Gregg C
authors.initials: GC
authors.lastname: Fonarow
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D003695:Delivery of Health Care / Q000706:statistics & numerical data*; D005260:Female; D006333:Heart Failure / Q000401:mortality* / Q000628:therapy; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D010351:Patient Discharge / Q000706:statistics & numerical data*; D011787:Quality of Health Care / Q000706:statistics & numerical data; D013997:Time Factors; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology