title: Trends in diabetes-related visits to US EDs from 1997 to 2007.
abstract: OBJECTIVE
  The aims of the study were to describe temporal trends in the number, proportion, and per capita use of diabetes-related emergency department (ED) visits and to examine any racial/ethnic disparity in ED use for diabetes-related reasons.
  
  
  METHODS
  We analyzed the ED portion of the National Hospital Ambulatory Medical Care Survey from 1997 through 2007. Diabetes-related ED visits were identified by International Classification of Diseases, Ninth Revision codes. Descriptive statistics were developed. Weighted linear and logistic regression models were used to determine significance of temporal trends, and multivariate logistic regression was used to examine racial/ethnic disparities.
  
  
  RESULTS
  A total of 20.2 million (1.69%; 95% confidence interval [CI], 1.59%-1.78%) ED visits were diabetes-related during the study period. We observed significant increases in the number and proportion of diabetes-related ED visits. Overall, there was a 5.6% relative annual increase in the proportion of ED visits that were diabetes-related during the study period. However, the per capita ED use among the population with diabetes did not change over time (P>.05 for trend). On multivariate analysis, black race (odds ratio, 1.8; 95% CI, 1.7-2.0), Hispanic ethnicity (odds ratio, 1.6; 95% CI, 1.4-1.8), and advancing age were associated with significantly higher odds of having a diabetes-related visit.
  
  
  CONCLUSIONS
  Despite a marked increase in number and proportion of diabetes-related ED visits during the study period, the per capita use of ED services for diabetes-related visits among the diabetic population remained stable.
authors.affiliation: Department of Emergency Medicine, Clinical Emergency Medicine, Keck School of Medicine of the University of Southern California, LAC+USC Medical Center, Los Angeles, CA 90033, USA. menchine@usc.edu
authors.forename: Michael D
authors.initials: MD
authors.lastname: Menchine
authors.forename: Warren
authors.initials: W
authors.lastname: Wiechmann
authors.forename: Anne L
authors.initials: AL
authors.lastname: Peters
authors.forename: Sanjay
authors.initials: S
authors.lastname: Arora
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American / Q000706:statistics & numerical data; D000367:Age Factors; D000368:Aged; D003920:Diabetes Mellitus / Q000453:epidemiology / Q000628:therapy*; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data / Q000639:trends*; D005006:Ethnicity / Q000706:statistics & numerical data; D005260:Female; D054625:Healthcare Disparities; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D016014:Linear Models; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D044469:Racial Groups / Q000706:statistics & numerical data; D012189:Retrospective Studies; D014481:United States / Q000453:epidemiology; D055815:Young Adult