title: Costs of inpatient and emergency department care for chronic obstructive pulmonary disease in an elderly Medicare population.
abstract: OBJECTIVE
  Treatment in the hospital setting accounts for the largest portion of healthcare costs for COPD, but there is little information about components of hospital care that contribute most to these costs. The authors determined the costs and characteristics of COPD-related hospital-based healthcare in a Medicare population.
  
  
  METHODS
  Using administrative data from 602 hospitals, 2008 costs of COPD-related care among Medicare beneficiaries age ≥ 65 years were calculated for emergency department (ED) visits, simple inpatient admissions and complex admissions (categorized as intubation/no intensive care, intensive care/no intubation, and intensive care/intubation) in a cross-sectional study. Rates of death at discharge and trends in costs, length of stay and readmission rates from 2005 to 2008 also were examined.
  
  
  RESULTS
  There were 45,421 eligible healthcare encounters in 2008. Mean costs were $679 (SD, $399) for ED visits (n = 10,322), $7,544 ($8,049) for simple inpatient admissions (n = 25,560), and $21,098 ($46,160) for complex admissions (n = 2,441). Intensive care/intubation admissions (n = 460) had the highest costs ($45,607, SD $94,794) and greatest length of stay (16.3 days, SD 13.7); intubation/no ICU admissions had the highest inpatient mortality (42.1%). In 2008, 15.4% of patients with a COPD-related ED visit had a repeat ED visit and 15.5-16.5% of those with a COPD-related admission had a readmission within 60 days. From 2005 to 2008, costs of admissions involving intubation increased 10.4-23.5%. Study limitations include the absence of objective clinical data, including spirometry and smoking history, to validate administrative data and permit identification of disease severity.
  
  
  CONCLUSIONS
  In this Medicare population, COPD exacerbations and related inpatient and emergency department care represented a substantial cost burden. Admissions involving intubation were associated with the highest costs, lengths of stay and inpatient mortality. This population needs to be managed and treated adequately in order to prevent these severe events.
authors.affiliation: GlaxoSmithKline, Research Triangle Park, NC 27709, USA. anand.a.dalal@gsk.com
authors.forename: Anand A
authors.initials: AA
authors.lastname: Dalal
authors.forename: Manan
authors.initials: M
authors.lastname: Shah
authors.forename: Anna O
authors.initials: AO
authors.lastname: D'Souza
authors.forename: Pallavi
authors.initials: P
authors.lastname: Rane
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000191:economics; D015897:Comorbidity; D003430:Cross-Sectional Studies; D004363:Drug Utilization; D004636:Emergency Service, Hospital / Q000191:economics* / Q000639:trends; D005260:Female; D017722:Hospital Charges / Q000706:statistics & numerical data* / Q000639:trends; D006760:Hospitalization / Q000191:economics* / Q000639:trends; D006801:Humans; D007362:Intensive Care Units / Q000191:economics / Q000639:trends; D007442:Intubation, Intratracheal / Q000191:economics; D007902:Length of Stay / Q000191:economics / Q000639:trends; D008297:Male; D006278:Medicare / Q000706:statistics & numerical data*; D010359:Patient Readmission / Q000191:economics; D029424:Pulmonary Disease, Chronic Obstructive / Q000191:economics* / Q000401:mortality / Q000628:therapy*; D012189:Retrospective Studies; D014481:United States
chemical_list: D001993:Bronchodilator Agents