title: The validity of readmission rate as a marker of the quality of hospital care, and a recommendation for its definition.
abstract: OBJECTIVE
  To perform a review of relevant literature regarding the use of readmission rate as a marker of the quality of hospital care, summarise its validity, and recommend a definition for its use.
  
  
  METHODS
  Literature search was performed on the Embase and Medline databases, with relevant articles extracted and reviewed.
  
  
  CONCLUSIONS
  Readmission rate as a marker of the quality of hospital care has been used both internationally and nationally, although its validity has only been partially substantiated. While prone to confounding, it remains a valuable indicator due to its ease of collection and its ability to be able to be combined with other variables. Although the definition of readmission rate varies in the literature, it may be defined as 'the number of patients who experienced unintended, acute readmission or death within 30-days of discharge from the index admission, divided by the total number of patients discharged alive within the reference period'.
authors.affiliation: Department of Public Health and General Practice, University of Otago, Christchurch, New Zealand. juliet.rumball-smith@otago.ac.nz
authors.forename: Juliet
authors.initials: J
authors.lastname: Rumball-Smith
authors.forename: Phil
authors.initials: P
authors.lastname: Hider
mesh_terms: D015986:Confounding Factors, Epidemiologic; D006761:Hospitals / Q000592:standards*; D006801:Humans; D010359:Patient Readmission / Q000706:statistics & numerical data*; D011787:Quality of Health Care