title: Epidemiology of lateral and medial epicondylitis in a military population.
abstract: OBJECTIVE
  To determine the epidemiology of lateral and medial epicondylitis in the U.S. military.
  
  
  METHODS
  The Defense Medical Epidemiology Database was queried for ICD-9 codes 726.32 (lateral epicondylitis) and 726.33 (medial epicondylitis) for the years 1998-2006. Multivariate Poisson regression was used to calculate incidence rates (IR) and rate ratios (RR) among demographic groups.
  
  
  RESULTS
  The IRs for lateral and medial epicondylitis were 2.98 and 0.81 per 1000 person-years. For lateral epicondylitis, women had a higher incidence (RR = 1.22, 95% CI 1.19-1.26). In both groups, analysis by age showed higher incidence in the > or = 40-year-old group. White compared with black race was a risk factor for both lateral (RR = 1.68, 95% CI, 1.63-1.74) and medial epicondylitis (RR = 1.11, 95% CI 1.05-1.17).
  
  
  CONCLUSIONS
  Female gender was a risk factor for lateral but not medial epicondylitis. Age greater than 40 and white race were significant risk factors for both conditions.
authors.affiliation: Department of Orthopedics, University of Colorado-Denver, Aurora, CO 80045, USA.
authors.forename: Jennifer Moriatis
authors.initials: JM
authors.lastname: Wolf
authors.forename: Sally
authors.initials: S
authors.lastname: Mountcastle
authors.forename: Robert
authors.initials: R
authors.lastname: Burks
authors.forename: Rodney X
authors.initials: RX
authors.lastname: Sturdivant
authors.forename: Brett D
authors.initials: BD
authors.lastname: Owens
mesh_terms: D000328:Adult; D016001:Confidence Intervals; D016208:Databases, Factual; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008887:Military Medicine; D008889:Military Personnel; D015999:Multivariate Analysis; D016012:Poisson Distribution; D012306:Risk; D012737:Sex Factors; D013223:Statistics as Topic; D013716:Tennis Elbow / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology; D055815:Young Adult