title: Longitudinal trends in discharge patterns of orthognathic surgeries: is there a regionalization of procedures in teaching hospitals?
abstract: OBJECTIVE
  The aim of this study was to determine if there is regionalization of orthognathic surgeries to teaching hospitals during the study period.
  
  
  METHODS
  The Nationwide Inpatient Sample for years 2000-2008 was used. Every hospitalization that had an orthognathic surgery was selected. Patient and hospital level variables were examined. The odds of an orthognathic surgery procedure being performed in a teaching hospital over the study period was computed with the use of a multivariable logistic regression model.
  
  
  RESULTS
  During the study period, a total of 108,264 hospitalizations underwent orthognathic surgeries in the United States. The average age ranged from 27 years during the years 2006-2008 to 28.2 years during the years 2000-2002. After adjusting for multiple patient and hospital level factors, the year of procedure was not a significant predictor of increasing odds of an orthognathic surgery being performed in a teaching hospital.
  
  
  CONCLUSIONS
  There is no evidence of concentration of orthognathic surgical procedures in teaching hospitals.
authors.affiliation: Director, Predoctoral Orthodontics, Harvard School of Dental Medicine, Boston, Massachusetts 02115, USA. va15@hsdm.harvard.edu
authors.forename: Veerasathpurush
authors.initials: V
authors.lastname: Allareddy
authors.forename: Marc B
authors.initials: MB
authors.lastname: Ackerman
authors.forename: Shankar R
authors.initials: SR
authors.lastname: Venugopalan
authors.forename: Sumit
authors.initials: S
authors.lastname: Yadav
authors.forename: Vikrum S
authors.initials: VS
authors.lastname: Nanda
authors.forename: Ravindra
authors.initials: R
authors.lastname: Nanda
mesh_terms: D000328:Adult; D002908:Chronic Disease; D017558:Elective Surgical Procedures / Q000706:statistics & numerical data; D005147:Facial Bones / Q000601:surgery; D005260:Female; D063172:Genioplasty / Q000706:statistics & numerical data; D006742:Hospital Bed Capacity / Q000706:statistics & numerical data; D017722:Hospital Charges / Q000706:statistics & numerical data; D006760:Hospitalization / Q000706:statistics & numerical data*; D006780:Hospitals, Rural / Q000706:statistics & numerical data; D006784:Hospitals, Teaching / Q000706:statistics & numerical data*; D006786:Hospitals, Urban / Q000706:statistics & numerical data; D006801:Humans; D007348:Insurance, Health / Q000706:statistics & numerical data; D007902:Length of Stay / Q000706:statistics & numerical data; D008137:Longitudinal Studies; D008297:Male; D063168:Mandibular Osteotomy / Q000706:statistics & numerical data; D063166:Maxillary Osteotomy / Q000706:statistics & numerical data; D008484:Medicaid / Q000706:statistics & numerical data; D056948:Orthognathic Surgical Procedures / Q000706:statistics & numerical data*; D010343:Patient Admission / Q000706:statistics & numerical data; D010351:Patient Discharge / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D012737:Sex Factors; D014481:United States; D044465:White People / Q000706:statistics & numerical data