title: Emergency department use of radiology services at a large urban teaching hospital.
abstract: OBJECTIVE
  Little research has explored the use of radiologic services by emergency departments and the factors that influence use. This study aimed to identify and characterize these factors.
  
  
  METHODS
  A total of 13,228 consecutive patient emergency charts from a large university emergency department were reviewed, and multiple parameters were entered into a database. The database was studied and statistical testing was done to identify significant parameters for patients who required imaging studies (X-ray group) and those who did not (non-X-ray group).
  
  
  RESULTS
  Factors such as age, diagnosis, urgency of illness, and illness severe enough to require hospitalization were statistically significant in determining the need for a radiologic evaluation in the emergency setting. When these factors were equalized for the X-ray and non-X-ray groups by multivariate linear regression analysis, male sex was also found to be statistically significant. Factors such as race and presence or absence of health insurance were not statistically influential on multivariate analysis.
  
  
  CONCLUSIONS
  Older age, diagnosis, and factors related to severity of illness affected the use of radiologic services in the emergency setting. Sex differences were also detected.
authors.affiliation: Department of Radiology, Ohio State University Medical Centers, Columbus, USA.
authors.forename: C T
authors.initials: CT
authors.lastname: McConnell
authors.forename: R L
authors.initials: RL
authors.lastname: Miller
authors.forename: C F
authors.initials: CF
authors.lastname: Mueller
authors.forename: S K
authors.initials: SK
authors.lastname: Moore
authors.forename: J I
authors.initials: JI
authors.lastname: Anderson
authors.forename: M L
authors.initials: ML
authors.lastname: Moeschberger
authors.forename: T E
authors.initials: TE
authors.lastname: Noguiera
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005260:Female; D006746:Hospital Bed Capacity, 500 and over; D006784:Hospitals, Teaching / Q000706:statistics & numerical data*; D006786:Hospitals, Urban / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009820:Ohio; D011872:Radiology Department, Hospital / Q000706:statistics & numerical data*; D012189:Retrospective Studies